FREE TICKETS?! Yes, really. In this episode of Tickets to Travel: The Business of Travel Experiences , we’re joined by the ultimate guest list insider, Lance Dashoff, founder of Loudie — the app that’s quietly revolutionizing how fans score free concert, comedy, and festival tickets across the U.S. From his early days at WME curating VIP access, to launching a platform that fills empty seats and fuels unforgettable nights out, Lance spills the tea on: Why 30–40% of tickets go unsold How promoters are secretly using free ticketing to boost bar sales and fan buzz The economics behind live events and why not all sold-out shows are actually sold out How Loudie helps fans and venues win — without the scammy vibes Why travel pros and concierges should start recommending this app yesterday Whether you’re in LA, NYC, or stuck in traffic on the way to Philly — this is the episode you can’t afford to miss (literally). Download Loudie, follow us @tix2travelpod on TikTok, IG, and YouTube, and grab your next night out before someone else does. Because every ticket is a ticket to travel — and sometimes the best ones are free. www.tttpod.com…
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The fat layer in our skin has the ability to expand and shrink. Yet, the regulatory mechanisms for skin fat growth and shrinking are not well understood. In this Share Your Research Talk, Edriss Yousuf describes his thesis research on the regulation of skin fat. He discovered a non-immune function of regulatory T cells and showed that they can induce autophagy in skin fat cells to decrease their lipid droplet size. These findings have implications for scarring and scleroderma, disorders which are typically associated with reduced skin fat abundance.…
Dirt is anything but dumb. Inside soil lives a community of microbes that play an important role in everything from the environment to agriculture. In this Share Your Research talk, Dr. Julia Nepper describes her postdoctoral research to model and understand the microbial community inside the rhizosphere, the soil adjacent to plant roots. Dr. Nepper performed a series of experiments to understand how three key microbial species interact with one another to support each other’s growth and survival. These findings indicate that the soil microbiome is greater than the sum of its parts, and underscores the importance of modeling complex species…
In this session, you will learn how to thoughtfully choose your next job opportunity and successfully negotiate with both your current research advisor and prospective one. You will learn how to strategically apply your negotiation skills as you navigate the process of securing a job offer; deciding which job opportunity is a good fit; and transitioning out of your PhD lab to begin a new chapter in your career. You will also learn how to execute each step with intention, clarity, and confidence.…
In this session, you will learn how to thoughtfully choose your next job opportunity and successfully negotiate with both your current research advisor and prospective one. You will learn how to strategically apply your negotiation skills as you navigate the process of securing a job offer; deciding which job opportunity is a good fit; and transitioning out of your PhD lab to begin a new chapter in your career. You will also learn how to execute each step with intention, clarity, and confidence.…
In this session, you will learn how to thoughtfully choose your next job opportunity and successfully negotiate with both your current research advisor and prospective one. You will learn how to strategically apply your negotiation skills as you navigate the process of securing a job offer; deciding which job opportunity is a good fit; and transitioning out of your PhD lab to begin a new chapter in your career. You will also learn how to execute each step with intention, clarity, and confidence.…
After receiving an invitation to interview from your prospective postdoc lab you need to develop an interview game plan. Your ultimate goal is to demonstrate why you are a good fit for the position. A postdoc interview usually includes meeting and talking with the principal investigator and members of your prospective lab. In this session, you will learn how to strategically highlight your strengths during the interview process and prepare a postdoc job talk that is relevant to your audience and outlines how you will contribute as a scholar and potential colleague.…
After receiving an invitation to interview from your prospective postdoc lab you need to develop an interview game plan. Your ultimate goal is to demonstrate why you are a good fit for the position. A postdoc interview usually includes meeting and talking with the principal investigator and members of your prospective lab. In this session, you will learn how to strategically highlight your strengths during the interview process and prepare a postdoc job talk that is relevant to your audience and outlines how you will contribute as a scholar and potential colleague.…
When you apply for postdocs and other types of jobs, you typically need to submit a curriculum vitae and a cover letter as part of your application package. This session will teach you strategies to assemble an effective application package geared towards getting the position that you want.
As you start thinking about doing a postdoc, there are a few key questions you need to consider. What type of position will allow you to build the profile needed to be competitive for your ideal career? What skills, knowledge, experiences, and type of environment will support your success and productivity? Knowing this will help you prioritize what to look for in a postdoc and begin scouting for opportunities that fit your goals. This session will help you organize your postdoc search and leverage your mentoring network to find postdoc opportunities that match your career goals.…
As you start thinking about doing a postdoc, there are a few key questions you need to consider. What type of position will allow you to build the profile needed to be competitive for your ideal career? What skills, knowledge, experiences, and type of environment will support your success and productivity? Knowing this will help you prioritize what to look for in a postdoc and begin scouting for opportunities that fit your goals. This session will help you organize your postdoc search and leverage your mentoring network to find postdoc opportunities that match your career goals.…
1 CRISPR, Climate Change, & Forest Health Panel: Part 3 1:00:54
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Später Spielen Später Spielen Listen Gefällt mir GelikedThe third video is a recording of a panel discussion moderated by SCL producer Rosa Veguilla on February 3, 2022. In this conversation, we asked the speakers follow-up questions about whether we can and should use CRISPR in the natural forest to combat climate change, and if so, what that might look like.…
Coral reefs are truly magnificent ecosystems that support an abundance of marine life, and they are under threat. As climate change warms the oceans, corals become stressed by the heat and struggle to survive. Can modern genetic tools, like CRISPR-Cas9, help save them? Some scientists say it is our responsibility to make sure corals adapt to climate change.…
Hearing loss, caused by the death of hair cells in the inner ear, is the third most common public health issue in the United States. Currently, there are no therapeutic strategies to restore hearing. In her thesis research, Dr. Amrita A. Iyer investigated the possibility of regenerating functional hair cells by reprogramming non-hair cells of the mouse inner ear. She found that overexpression of a single transcription factor, ATOH1, can successfully reprogram non-sensory cells into hair cells with typical characteristics in neonatal mice. However, a combination of three transcription factors - ATOH1, GFI1, and POU4F3 - was required to reprogram inner hair cells in 1-week old mice. Her findings provide a window into the developmental and gene expression requirements for regeneration of inner ear hair cells in mammals, and may inform future therapeutic strategies for hearing loss in humans.…
Dr. Tshaka Cunningham received his PhD in molecular biology from Rockefeller University and completed postdoctoral training at the Institut Pasteur in Paris. He is the co-founder and CSO of Polaris Genomics, a precision behavioral health company. Dr. Cunningham is a leading advocate for diversity and representation in genomics and is Executive Director of the Faith-Based Genetic Research Institute.…
This short film explores how Dr. Tshaka Cunningham, a molecular biologist and a Black man of faith, unites his personal and professional identities to advocate for community health through personal genomics. (Talk recorded in January 2018)Audience: General Public Student Researcher Educators Educators of H. School / Intro Undergrad Educators of Adv. Undergrad / Grad Duration: 00:08:47…
The National Cancer Act was signed into law in 1971, declaring a “War on Cancer.” While cancer deaths have declined remarkably since then due to major advances in therapies, we are still far from eliminating cancer altogether. In her Share Your Research talk, Christina Cho discusses how we could make further progress in our fight against cancer by learning more about the tumor microenvironment and the role of the immune system on tumor growth. Her work focuses on the complicated functions associated with cancer-associated fibroblasts, which can both help and harm cancer cells.…
More than 200 million people are infected with schistosomes, aquatic parasites that cycle between snails and humans, and cause the human disease schistosomiasis. Risk of contracting this disease is expected to rise in the coming years due to climate change, agricultural expansion, and population growth. In her Share Your Research Talk, Dr. Karena Nguyen provides an overview of the schistosome life cycle, including the points at which interventions can disrupt this cycle in order to reduce disease transmission. She then goes on to discuss her work modeling the impact of these interventions.…
Intestinal villi are finger-like projections that line the small intestine, increasing surface area to help with absorption of nutrients. Injuries to the intestinal villi can cause a range of health problems, and can even be life-threatening. In this Share Your Research Talk, physician-scientist trainee Takahiro Ohara discusses his research on the molecular and cellular processes that drive recovery of intestinal villi. He describes the fetal-like state that cells on damaged villi take on, and how adaptive differentiation of these cells leads to proper villus recovery.…
When we think of what makes two species distinct, we often think of their ability (or inability) to produce viable offspring. But is there anything we can learn from inviable offspring? In this Share Your Research talk, Maiko Kitaoka discusses her work on closely related Xenopus frogs. She reveals how examining hybridization between these species at the cellular level can provide insight into only the mechanisms that restrict cell division and development, but also broader patterns of how new species are able to evolve.…
Unlike most animals, plants don’t have the option to run away when something is trying to eat them. Instead, they develop all kinds of chemical and structural defenses. But these defenses can be energetically costly, and plants’ ability to defend themselves can change over time and with the environment. In her Share Your Research Talk, Dr. Mia Howard discusses how soil microbes can influence defensive traits in goldenrod (Solidago altissima) at various stages of succession. Her work reveals that microbial communities from late succession soils can increase plant resistance to herbivory, and may even make plants less vulnerable to pests.…
Exercise is like medicine for the mind and body, particularly in aging adults. Regular physical activity not only provides physiological benefits, it also reduces the risk of dementia, Alzheimer’s, and other declines in mental function associated with aging. In his Share Your Research Talk, Brandon Yates provides an overview how proper hydration during exercise can help maximize the health benefits associated with exercise. He also discusses why this is particularly important in older adults, who are often chronically dehydrated.…
Saving The American Chestnut: A Case Study, we explore more deeply the complicated question of using biotechnology to make forests more resistant to climate change. We look to the story of the American Chestnut as an example of how scientists are trying to bring a once-abundant tree back from near extinction through genetic engineering. We also consider the budding genome-editing technology CRISPR Cas-9 as a more precise tool with great promise but also great uncertainty. Can we do it and should we do it?…
Some people harbor deleterious mutations in disease-relevant genes, yet they are completely healthy. How are scientists trying to understand these so-called ‘genetic superheros’? In this Share Your Research talk, Dr. Mohamed El-Brolosy describes his thesis research in the model organism zebrafish. Dr. El-Brolosy found that genetic compensation to deleterious mutations relies on degradation of the mutant mRNA, which triggers upregulation of compensatory genes in a homology-dependent manner. These findings can inform strategies to better understand and treat genetic diseases, many of which have limited therapeutic options.…
Solid tumors, such as those in the brain, can be deadly when they expand or spread to other parts of the body. Before they spread, tumors send out molecular messages within small membranous structures known as extracellular vesicles (EVs). The proteins and small non-coding RNAs inside EVs can help tumors evade the immune system and seed new sites of growth. In this Share Your Research talk, Dr. Luz Cumba García describes her thesis research on extracellular vesicles released by aggressive brain cancers called glioblastoma. Dr. Cumba García’s work helps scientists understand the EV profiles of different glioma subtypes, as well as how the messages inside EVs help them shut off the immune system.…
In order to succeed in kindergarten and beyond, children must develop language skills within their home reading environment. This environment is often influenced by the reading ability of a child’s caregivers. In this Share Your Research talk, Dr. Paige Greenwood describes her doctoral research on the association between maternal reading ability and the development of the language brain network in children. Her work showed that lower maternal reading fluency is associated with higher language network connectivity to brain regions involved in cognitive control and semantics in children. These data suggest that if there is lower frequency or quality of engagement in the home reading environment, children’s brains may overcompensate to meet their language development needs.…
Chronic liver diseases affect millions of people worldwide. By understanding how liver disease progresses, we may be able to identify new therapies that can protect the liver. Dr. Chrystelle Vilfranc studied the role of BRUCE, a protein that is known to be important in several cellular processes in our bodies, in liver disease. She found that the absence of BRUCE in mouse livers led to accelerated liver disease and higher rates of liver cancer when combined with a liver damaging compound. Furthermore, hepatocellular carcinomas that develop in the absence of BRUCE in the liver appear to have increased β-catenin activity. Loss of BRUCE may be a marker of early liver disease in humans, and rescuing BRUCE expression or activity may help stop or reverse disease in the liver.…
Is it possible to define life using math? Dr. Alyssa Adams’s research seeks to answer precisely this question. In their Share Your Research talk, Dr. Adams introduces the concept of open-ended evolution, and describes how they have developed mathematical models to help us understand how biological systems can innovate within a changing environment. These studies could help us to identify living systems beyond our planet that may be vastly different from those we recognize on Earth!…
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iBiology Podcast
What does a redwood forest look like, and sound like, in the wake of a devastating fire? See a forest in a new way in this new cinematic short from the Science Communication Lab. Walk through a fire-ravaged redwood forest with experts Beatrix Jiménez, a Land Stewardship Associate at the Sempervirens Fund, Ian Bornarth, a Bay Area-based photographer documenting post-fire recovery, and Alex Jones, the UC Santa Cruz Campus Natural Reserve Manager. Their observations make visible the forces of destruction and regrowth throughout the redwoods ecosystem.…
Bat species are numerous and diverse, and are found in nearly every corner of the globe. Therefore, they serve as a valuable system to study the evolution of mammalian traits. Dr. Alexa Sadier collected field and museum samples from over 50 species of bats to ask how color vision evolved in this unique group of mammals. By looking at gene expression at multiple levels - DNA, RNA, and protein - Sadier determined that different bat species have color vision capabilities adapted to their diets, and UV vision has been lost independently in multiple species through regulation of all levels of gene expression. By “catching” evolution in action, Sadier’s research has revealed important insights into the mechanisms of evolution through trait loss.…
Dr. Alex Moore provides an introduction to coastal wetlands, including the functional role they play in our world, as well as the many ways that these ecosystems are used for economic and recreational activities. Dr. Moore discusses the traditional approach to restoring coastal wetlands, and the ways that these efforts can fall short of restoring functional capacity in coastal salt marshes. Incorporating consumer interactions into restoration efforts may provide an opportunity to further improve wetland restoration. Moore finishes with a brief overview of work currently underway in coastal mangroves, another important wetland ecosystem.…
Trees are magnificent organisms that have evolved very slowly over millions of years, making it hard for them to adapt to rapid changes in the environment. With climate change imminent, scientists estimate up to 25% of US forests will decline over the next three decades. In this film, four researchers ponder the question ”What can we do to help forests adapt to our changing planet?” The answer is, of course, not so straightforward, and leaves us thinking more deeply about the future of forest landscapes and how we can make them more resilient.…
Nayak describes research she has done on methanogenic archaea – microorganisms that produce the potent greenhouse gas methane. One species of methanogens, Methanosarcina acetivorans, has unique chemical modifications on the enzyme it uses to produce methane. Dr. Nayak describes how she used CRISPR/Cas9 genome editing to determine that these modifications are used to protect M. acetivorans from environmental stress to ensure that the organism can support its metabolic needs in a changing environment.…
Educational science videos are commonly used in undergraduate biology instruction, but what do we know about the student perspective on them? In this paper discussion and live Q&A, Dr. Laci Gerhart-Barley and Dr. Brittany Anderton present findings from their open-access paper “Engaging students through online video homework assignments: A case study in a large-enrollment ecology and evolution course.” Undergraduate biology educators will find a wealth of useful information on how to effectively implement science videos in homework assignments, develop assessment questions, and use the content in educational science videos to promote student engagement and learning of the process of science.…
Synthetic cells can be used to teach us about the basic principles of life and evolution, and they hold promise for a range of applications including biomaterials and drug development. Dr. Kate Adamala narrates an introduction to this exciting field.
Meningioma is the most common intracranial tumor, with limited treatment options. In order to identify new therapies for meningioma, it is important to understand their underlying biology. In this Share Your Research talk, Dr. Abrar Choudhury describes his thesis research, which began by looking at DNA methylation patterns to better understand gene regulation in meningioma, leading him to identify the cell cycle proteins CDK4 and CDK6 as therapeutic targets.…
Mentors shape our careers by guiding us through difficult decisions. But, how do you find a good mentor? In this series, Dr. Joanne Kamens advocates for the use of Peer Mentoring Groups as a method to provide and receive valuable mentoring opportunities. While working towards a common goal, group mentorship allows for an organic development of valuable experiences and accountability for your personal growth as you create a circle of mentors that will help throughout your career.…
How do you go about forming a Peer Mentoring Group? In her second video, Kamens explains the logistics of forming a Peer Mentoring Group. First, you need to find 5-6 peers that share a similar problem. As you prepare to meet, you need to set the ground rules and provide structure to your meetings (e.g., provide agenda, assign a leader per meeting, decide on topics of interest, and provide curricula).…
As Kamens explains, the commitment of the members is crucial for the success of the Peer Mentoring Group. In her third talk, Kamens overviews what are mentorship best practices while running a Peer Mentorship Group. From setting concrete content and activities to set up goals, these best practices will allow you to create an environment that will help you get feedback and find opportunities to grow.…
Life on Earth evolved once - this means that all biological systems on our planet are rooted in the same fundamental framework. This framework is extremely complex and we have yet to fully understand the processes inside each living cell. One way of understanding complex systems is to break them down into simpler parts. This is the principle of engineering the synthetic cell: to use our current knowledge of biology for building a living cell with the least amount of parts and complexity. Synthetic cells can be used to teach us about the basic principles of life and evolution, and they hold promise for a range of applications including biomaterials and drug development. Dr. Kate Adamala narrates an introduction to this exciting field.…
Gregor Mendel’s experiments with pea plants laid the foundation for our understanding of genetic inheritance. In this video, Shirley Tilghman tells the story of Mendel’s studies and how his data led to an understanding of how the information within genes is passed from generation to generation.
Rodolphe Barrangou studies beneficial microbes, focusing on the occurrence and diversity of lactic acid bacteria in fermented foods and as probiotics. Using functional genomics, he has focused on uncovering the genetic basis for health-promoting traits, including the ability to uptake and catabolize non-digestible carbohydrates. He spent 9 years at Danisco-DuPont, characterizing probiotics and starter cultures, and established the functional role of CRISPR-Cas as adaptive immune systems in bacteria. At NC State, he continues to study the molecular basis for their mechanism of action, as well as developing and applying CRISPR-based technologies for genotyping, building immunity and genome editing.…
Jennifer Doudna and Emmanuelle Charpentier won the 2020 Nobel Prize in Chemistry for their development of a powerful gene editing tool known as the CRISPR-Cas9 system. In this short film, Doudna, Charpentier, and Martin Jinek, who was a post-doc at the time in Doudna’s lab, describe how their famous collaboration happened and share the story behind the influential experiments that led to their discovery.…
Parasitic plants are important in natural ecosystems and in agriculture. Parasitism is a successful life strategy that has convergently evolved in all kingdoms of life.
Do students learn more with clickers and peer-discussion? Bill Wood (University of Colorado, Boulder) describes the Knight et al. study, which looks at student learning gains in an active learning classroom that utilizes clicker questions and peer-discussion, similar to a think-pair-share.
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iBiology Podcast
Think-Pair-Share is an active learning technique that can be used in small or large enrollment courses to engage students and encourage them to practice scientific thinking skills. In think-pair-share, students think about their answer to a question, pair with a partner to debate their choice, and then share their answers with the class. In this video showing examples of think-pair-share in action, Kimberly Tanner (San Francisco State University) shares her experience using this method in classrooms of all sizes.…
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iBiology Podcast
Clickers are Audience Response Systems that enable instructors to ask a multiple-choice question, poll students for an answer, and display the aggregated results to the class. In this video showing examples of active learning classroom models, Bill Wood (University of Colorado Boulder) describes how clickers can be used effectively to engage students.…
How can one shift from a teacher-centered to a student-centered classroom model? What are the benefits of active learning for students and instructors?
What are the issues with traditional undergraduate biology education? What is the role of an educator in a 21st century college classroom? What is missing in the way we currently teach science in college?
We have an online Q&A (hosted on January 6th, 2021) discussing the benefits and limitations of preprints from the perspective of early-career scientists. Panelists included Jessica Polka, Elizabeth Silva (Associate Dean of Graduate Programs at UCSF and former editor at PLoS), and Kate Carbone (an industry postdoc).…
Course Directors A. Malcolm Campbell, Kimberly Tanner, and Bill Wood talk about the reasons why we need to reform undergraduate biology education and why they got involved in the Scientific teaching Series project.
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iBiology Podcast
Dr. Harold Varmus talks to Dan Rather about his journey from literature major to scientist, and from the discovery of oncogenes to creating PLoS. Varmus reflects on his time as a researcher, as Director of the NIH, and on the importance of open communication in science. He ends by emphasizing why good science communication is important to engage more people in conversations about science.…
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iBiology Podcast
1 Conversations in Science with Dan Rather and Shirley Tilghman: The Future of Science Training 22:22
How should we consider a journey through a career in science? How should we think of the future of science training? Few have given these kinds of questions more thought than Shirley Tilghman, a leading genetics researcher at Princeton University who also became president of that prestigious institution. In this far-reaching interview, Dr. Tilghman tells Dan Rather about her own path in science and how we need to rethink how we train and inspire budding scientists in a challenging career environment. This interview was filmed in 2013. This video is a collaboration between the Lasker Foundation and iBiology.…
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iBiology Podcast
1 Conversations in Science with Dan Rather and George Shultz: Climate Change and Renewable Energy 19:06
Secretary Shultz has been addressing global crises inside and outside of government for decades. He now has his attention firmly focused on concerns over climate change and renewable energy. In a candid and provocative conversation, he explains to veteran journalist Dan Rather why this has become his cause and why he thinks his fellow Republicans need to take it seriously or risk being “mugged by reality.” Secretary Shultz is not looking to point fingers but instead create a framework by which elected leaders across the political spectrum can come together and work on solutions. Funding for this video was provided by the Carnegie Foundation.…
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iBiology Podcast
Paul Nurse and Dan Rather have both spent their lives looking at the world and how it works, albeit from very different perspectives. Now the Nobel Prize winning geneticist and esteemed journalist come together for a frank and thoughtful conversation on the state of science and its role in society. Topics include climate change, GMOs, science education, how research spurs economic development, and Dr. Nurse’s own remarkably inspiring and surprising personal history. Funding for this interview was provided by the Lasker Foundation.…
Eric Kandel won the Nobel Prize in Physiology or Medicine in 2000 for his work on the nervous system. Here, he discusses the mind, the brain, and his journey into a life of science. This interview was filmed in 2008 for a series on the mind and the brain. This video is a collaboration between the Lasker Foundation and iBiology.…
There are many challenges when it comes to addressing the destructive effects of climate change, and few people are better suited to address these challenges than Chris Field. A world-renowned researcher, Dr. Field understands the nuances and implications of the science. And as a gifted and trusted communicator who has the ear of the world’s diplomats, he can explain the urgency of action to policy makers and the general public. In this wide-ranging and thoughtful interview with Dan Rather, Dr. Field calmly but firmly explains what we know about climate change, what the stakes are, and what can be done about it.…
How can instructors get started with active learning? What simple and effective active learning methods can easily be implemented in a course? Hear from instructors about their experience and see classroom demonstrations using think-pair-share and clickers.
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iBiology Podcast
Compare different pedagogical approaches and undergraduate biology classrooms. Reflect on how your teaching fits within the spectrum of educational models.
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iBiology Podcast
1 Conversations in Science with Dan Rather and Jennifer Doudna: The Discovery of a Gene Editing Technology 37:32
In the last few years, the term CRISPR has exploded on the global scene, and with it UC Berkeley professor Jennifer Doudna, one of the pioneers in the field, has emerged into the spotlight. From magazine covers, to news broadcasts, to social media, CRISPR is the rare scientific breakthrough that has captivated the interest of the general public. But what is CRISPR really? What are its implications now and into the future? What profound ethical questions are raised by this ability to so precisely and easily edit the genome? In a candid and far-ranging conversation with Dan Rather, Doudna leads viewers through a nuanced and captivating view of this new technology. And along the way she shares her own improbable journey into science and her lessons for others – especially young women – who want to follow in her footsteps. Funding for this interview was provided by the Lasker Foundation.…
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iBiology Podcast
The Dalai Lama has always had a keen interest in science. In this interview from 2008, Dan Rather and His Holiness talk science and what we can learn from the practice of meditation. This interview was filmed in 2008 for a series on the mind and the brain. This video is a collaboration between the Lasker Foundation and iBiology.…
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iBiology Podcast
1 Conversations in Science with Dan Rather and Daniel Colón-Ramos: Encouraging Scientific Exploration 23:07
Daniel Colón-Ramos began his life in science by being fascinated as a young boy by the unique environment of his native Puerto Rico. But in formal schooling, he found the excitement of discovery too often absent. Now a respected researcher at Yale University, Dr. Colón-Ramos keeps his boyhood enthusiasm for the awe and wonder of the natural world. He is eager to encourage scientific exploration and share his infectious spirit with his students and the larger world, as he does in this inspiring conversation with Dan Rather.…
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iBiology Podcast
Jennifer Doudna tells the story of how studying the way bacteria fight viral infection turned into a genomic engineering technology that has transformed molecular biology research. In 2013, Doudna and her colleagues developed the CRISPR-Cas9 gene expression system that, when introduced into animal cells, makes site-specific changes to intact genomes. CRISPR-Cas9 is more precise, more efficient, and less expensive than other genome editing tools and, as a result, has facilitated a wide range of studies that were previously unachievable.…
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iBiology Podcast
Since 1987, different versions of ImageJ have been used by scientists to analyze biological images. In this talk, Dr. Kevin Eliceiri provides an overview of ImageJ, explains how ImageJ has evolved through time, and demonstrates major functionalities of this open-source software.
The Scientific Community Image Forum is an online resource that helps scientists answer their bioimage analysis questions. In this talk, Dr. Anne Carpenter and Dr. Kevin Eliceiri encourage scientists to use the Scientific Community Image Forum when they have image analysis difficulties, and to familiarize themselves with the different tools that they can use to answer their questions.…
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iBiology Podcast
In this series, Dr. Anne Carpenter and Dr. Kevin Eliceiri provide an overview of bioimage analysis. Pre-processing is the first step that follows image acquisition and will prepare your image by reducing the signal-to-noise ratio, applying appropriate filters to the image, and color extraction. Once you perform pre-processing, you’re ready for segmentation, the process of identifying individual cells or structures within an image. If appropriate for your dataset, you can use tracking to be able to link objects in space and time and measure speed, directionality, and cell division. The last step of bioimage analysis is to analyze the data by measuring different features like the number of cells or biological structures, or their size, shape, intensity or texture. Carpenter and Eliceiri finalize this series by providing tips on best practices that will aid scientists in properly analyzing their data.…
In this series, Dr. Anne Carpenter and Dr. Kevin Eliceiri provide an overview of bioimage analysis. Pre-processing is the first step that follows image acquisition and will prepare your image by reducing the signal-to-noise ratio, applying appropriate filters to the image, and color extraction. Once you perform pre-processing, you’re ready for segmentation, the process of identifying individual cells or structures within an image. If appropriate for your dataset, you can use tracking to be able to link objects in space and time and measure speed, directionality, and cell division. The last step of bioimage analysis is to analyze the data by measuring different features like the number of cells or biological structures, or their size, shape, intensity or texture. Carpenter and Eliceiri finalize this series by providing tips on best practices that will aid scientists in properly analyzing their data.…
In this series, Dr. Anne Carpenter and Dr. Kevin Eliceiri provide an overview of bioimage analysis. Pre-processing is the first step that follows image acquisition and will prepare your image by reducing the signal-to-noise ratio, applying appropriate filters to the image, and color extraction. Once you perform pre-processing, you’re ready for segmentation, the process of identifying individual cells or structures within an image. If appropriate for your dataset, you can use tracking to be able to link objects in space and time and measure speed, directionality, and cell division. The last step of bioimage analysis is to analyze the data by measuring different features like the number of cells or biological structures, or their size, shape, intensity or texture. Carpenter and Eliceiri finalize this series by providing tips on best practices that will aid scientists in properly analyzing their data.…
In this series, Dr. Anne Carpenter and Dr. Kevin Eliceiri provide an overview of bioimage analysis. Pre-processing is the first step that follows image acquisition and will prepare your image by reducing the signal-to-noise ratio, applying appropriate filters to the image, and color extraction. Once you perform pre-processing, you’re ready for segmentation, the process of identifying individual cells or structures within an image. If appropriate for your dataset, you can use tracking to be able to link objects in space and time and measure speed, directionality, and cell division. The last step of bioimage analysis is to analyze the data by measuring different features like the number of cells or biological structures, or their size, shape, intensity or texture. Carpenter and Eliceiri finalize this series by providing tips on best practices that will aid scientists in properly analyzing their data.…
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iBiology Podcast
In this series, Dr. Anne Carpenter and Dr. Kevin Eliceiri provide an overview of bioimage analysis. Pre-processing is the first step that follows image acquisition and will prepare your image by reducing the signal-to-noise ratio, applying appropriate filters to the image, and color extraction. Once you perform pre-processing, you’re ready for segmentation, the process of identifying individual cells or structures within an image. If appropriate for your dataset, you can use tracking to be able to link objects in space and time and measure speed, directionality, and cell division. The last step of bioimage analysis is to analyze the data by measuring different features like the number of cells or biological structures, or their size, shape, intensity or texture. Carpenter and Eliceiri finalize this series by providing tips on best practices that will aid scientists in properly analyzing their data.…
In this series, Dr. Anne Carpenter and Dr. Kevin Eliceiri provide an overview of bioimage analysis. Pre-processing is the first step that follows image acquisition and will prepare your image by reducing the signal-to-noise ratio, applying appropriate filters to the image, and color extraction. Once you perform pre-processing, you’re ready for segmentation, the process of identifying individual cells or structures within an image. If appropriate for your dataset, you can use tracking to be able to link objects in space and time and measure speed, directionality, and cell division. The last step of bioimage analysis is to analyze the data by measuring different features like the number of cells or biological structures, or their size, shape, intensity or texture. Carpenter and Eliceiri finalize this series by providing tips on best practices that will aid scientists in properly analyzing their data.…
In this talk, Dr. Anne Carpenter provides an overview of CellProfiler, a free, open-source software program for image analysis. CellProfiler helps scientists to identify and measure biological entities, process images, and export data for further analysis. Carpenter provides examples on how to use CellProfiler, and explains how CellProfiler can aid scientists in their bioimage analysis.…
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iBiology Podcast
Modern microscopy produces large multi-dimensional datasets, which creates new challenges for data storage, processing and visualization. In this talk, Dr. Loic Royer uses a developing drosophila melanogaster embryo to explain how to solve some of the challenges produced by multi-dimensional microscopy datasets.…
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iBiology Podcast
1 Jason Swedlow: Metadata in BioImaging: Management, Organization, and Sharing BioImaging Data 22:50
In order to understand an image of a biological sample and what it represents, one needs to understand its metadata. Metadata is the information behind the image that shows the experimental procedure, image acquisition settings, and the analysis performed on the data in order to obtain the represented image. Dr. Jason Swedlow explains what constitutes image metadata, and provides examples on how to catalog, organize, analyze, and share the metadata of biological images.…
Microscopy is a key technology driving biological discovery. Nowadays, microscopy based scientific findings must be substantiated by quantitative image analysis. The discipline concerned with such quantification of biological microscopy images is called bioimage analysis. Dr. Christian Tischer walks us through the main concepts of a typical bioimage analysis workflow. He explains how to quantitatively interpret the content of microscopy images and how to automatically detect objects in images and derive object based measurements. He also emphasizes the importance of visual inspection and quality control of automated image analysis. Finally, he presents an overview of current bioimage analysis tools and communities.…
How do we visualize biological samples? In this talk, Dr. Nico Stuurman provides an overview of the different tools, equipment, and software available to acquire an image of a biological sample using a light microscope, and the considerations one needs to take when using these tools. This lecture will allow scientists to understand the principles behind image acquisition in order to improve and optimize the analysis of their sample.…
Manu Prakash always yearned to know the why and the how of things. As a boy in India, he spent endless hours playing outside with animals and making flammable artifacts in an abandoned lab in the basement of his home. Having the chance to explore his surroundings with open-ended curiosity, he learned to find the sublime in the mundane. Today, as a world-renowned researcher and inventor at Stanford University, he continues to be inspired by these childhood lessons, and is creating low-cost tools to empower people around the globe to go on their own journey of science and discovery.…
Rebecca Calisi Rodríguez’s research on pigeons, like her life, is one of charting an original path. Her experiences as a Mexican-Italian-American woman, professor, artist and mother have provided her with fascinating and unusual perspectives to study the biology of parental behavior. And in so doing, she is redefining what it means to be a scientist.…
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iBiology Podcast
1 Esteban Burchard Part 3: Inclusion of Minorities in Science and Medicine: An Inclusive Future 7:09
There is ample evidence that race can be a major factor in health outcomes. But racial and ethnic minorities are underrepresented in clinical and biomedical research. In this series, Dr. Esteban Burchard talks about the consequences of this underrepresentation and what does it mean for equity in research and medicine. He also explains how race is used by your doctor to make critical decisions about your health, and discusses what happens if you don’t fit neatly in one racial box, and how does this impact the medical treatment. Finally, Burchard discusses how scientific breakthroughs often come when problems are approached from different perspectives, and the importance of improving diversity and inclusion in science.…
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iBiology Podcast
1 Esteban Burchard Part 2: The Impact of Race and Genetic Ancestry on Medicine: Which Box Do I Check? 4:29
There is ample evidence that race can be a major factor in health outcomes. But racial and ethnic minorities are underrepresented in clinical and biomedical research. In this series, Dr. Esteban Burchard talks about the consequences of this underrepresentation and what does it mean for equity in research and medicine. He also explains how race is used by your doctor to make critical decisions about your health, and discusses what happens if you don’t fit neatly in one racial box, and how does this impact the medical treatment. Finally, Burchard discusses how scientific breakthroughs often come when problems are approached from different perspectives, and the importance of improving diversity and inclusion in science.…
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iBiology Podcast
There is ample evidence that race can be a major factor in health outcomes. But racial and ethnic minorities are underrepresented in clinical and biomedical research. In this series, Dr. Esteban Burchard talks about the consequences of this underrepresentation and what does it mean for equity in research and medicine. He also explains how race is used by your doctor to make critical decisions about your health, and discusses what happens if you don’t fit neatly in one racial box, and how does this impact the medical treatment. Finally, Burchard discusses how scientific breakthroughs often come when problems are approached from different perspectives, and the importance of improving diversity and inclusion in science.…
In her third lecture, Zoghbi explores possible therapies for MECP2 disorders. First, using Deep Brain Stimulation (DBS), Zoghbi’s team together with collaborator Dr. Jianrong Tang were able to rescue learning and memory deficits, enhance neurogenesis, correct abnormal neural network activity, and improve MeCP2-linked gene expression changes in a mouse model of Rett Syndrome. Then, she discusses two approaches to normalize the MeCP2 protein in MECP2 duplication mice: by deleting the duplicated MECP2 gene in the genome, or by decreasing MECP2 mRNA levels using antisense-oligonucleotides. Even though these two approaches seem to rescue developmental issues caused by MECP2 duplication, titrating MeCP2 levels is required in order to avoid Rett-like symptoms caused by lowering the protein too much.…
In her second lecture, Zoghbi explains how MeCP2 molecularly modulates neuronal function. Their studies uncovered a critical link between cytosine methylation, MeCP2, and the methylating enzyme Dnmt3a, in Rett Syndrome. They hypothesized that MeCP2 partially causes Rett-Syndrome symptoms by failure of reading methylated DNA marked by Dnmt3 and indeed showed that Dnmt3-dependent mCH plays a central role in Rett pathogenesis.…
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iBiology Podcast
Dr. Huda Zoghbi’s work has provided insight into Autism Spectrum Disorders (ASD) by focusing on Rett Syndrome, a postnatal progressive neurological disorder. By studying the genetics of Rett Syndrome, her group made the seminal discovery of X-linked Methyl CpG-binding protein 2 (MECP2) as the gene that causes Rett Syndrome. Zoghbi’s group showed that the severity of the disease was highly dependent on the amount of functional MeCP2 protein expressed. Females, who carry one normal and mutant MECP2 allele typically suffer from Rett syndrome, but the amount of functional protein is influenced by X-chromosome inactivation, and girls with more cells expressing normal allele have milder features. Surprisingly, they also showed that duplications spanning MECP2 can cause a Rett-like progressive neurological disease, highlighting the importance of MeCP2 levels for neural functions. Zoghbi describes how these findings have spurred new research into how MeCP2 affects postnatal development and brain function.…
As the COVID-19 pandemic escalated in the beginning of 2020, there was a need for the rapid dissemination of scientific information to understand everything from how the virus spreads, to how it affects the human body, to how the disease can be treated and prevented. Jessica Polka, Executive Director of ASAPbio, explains that, for this reason, the pandemic has inspired an increasing number of scientists to post their research papers on preprint servers. Publishing papers in traditional journals with formal peer review can take a lot of time. Posting manuscripts on preprint servers, on the other hand, can happen quite fast. But, considering that preprints do not undergo formal peer review before they are posted, is this prudent? Dr. Polka talks about how preprints experience their own crowd-sourced, informal peer review process through public commentary on social media and other venues by scientists and other experts, and this discourse can actually improve the quality of the paper over time. A major caveat of preprints is the potential for the media and the public, who may not be aware of the provisional nature of preprints, to disseminate erroneous or inaccurate information, and so, this requires proper education and training on what preprints are and how to interpret them.…
In the cytoplasm of cells, thousands of tightly packed molecules and structures execute the numerous processes necessary to maintain life. Although there are many ways to study cellular processes, one of the simplest ways to understand the different parts of a cell is to visualize them. Dr. Sven Truckenbrodt sought to better understand the machinery of the neuronal synapse using fluorescence microscopy, yet he was limited by the physical properties of light. To circumvent the 250-nm resolution limit imposed by the photophysics of light waves, Truckenbrodt developed X10 expansion microscopy, based on the original concept of expansion microscopy invented in the Boyden lab. By uniformly expanding the volume of tissue by a thousand-fold using synthetic polymers (the same as those found in baby diapers!), this approach increases the distance between closely packed proteins, allowing them to be visualized with fluorescence microscopy. Truckenbrodt shares the story of the first time he used X10 expansion microscopy to clearly image synaptic vesicles, after studying them for years as a neuroscientist! He describes how he used X10 microscopy to characterize the precise localization of synaptic and cytoskeletal proteins that previously could not be visualized in detail. Truckenbrodt ends his talk by sharing how the X10 approach has been used by other research groups and encourages his viewers to consider applying this method in their own research to make new discoveries.…
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iBiology Podcast
In his last lecture, Singer continues the story of the life and death of RNA. His lab has developed several more fluorescence microscopy techniques that let them study, in real time, the translation and degradation of mRNA. These techniques allow them to track when and where translation begins, how quickly a ribosome binds to a mRNA once it has reached its destination, how long the ribosome stays bound and how rapidly it adds amino acids to a growing protein chain. In addition, these techniques can be used to unveil the dynamics of RNA degradation. In an interesting twist, it turns out that for mRNAs that must be degraded during the cell cycle, their fate is decided at the time of their birth.…
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iBiology Podcast
1 Robert Singer Part 2: RNA Localization: Following Single mRNAs from Birth to Death in Living Cells 40:49
To understand the relationship between RNA localization and translation, it is necessary to visualize the movement of the RNA in real time. In his second lecture, Singer explains how his lab found an ingenious way to label RNAs in live cells and follow their movement. In the nucleus, RNA moves by diffusion and stochastically finds a nuclear pore to exit. In the cytoplasm, however, it is a different story. RNA, in a translationally repressed state, undergoes directed movement along the cytoskeleton. Once it reaches its destination, translation is activated. Singer’s lab showed that neuronal stimulation leads to ß-actin mRNA localization to dendritic spines, followed by translation, and stabilization of the synapse; events that are crucial for memory and learning.…
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iBiology Podcast
1 Robert Singer Part 1: Seeing is Believing: Imaging the Expression of Genes within Single Cells 34:39
In this series of lectures, Dr. Robert Singer explains how it is possible to follow a single mRNA molecule from its birth to its death. Singer begins by explaining that cell cultures are heterogeneous and analyzing single cells provides spatial and temporal information not available from bulk analysis. He outlines how his lab developed techniques such as fluorescence in situ hybridization (FISH) that have allowed them to measure gene expression in single cells. Using these techniques, they discovered that some RNAs localize to specific areas in the cell and RNA localization is linked to its regulation and function. For example, ß-actin mRNA localization to the leading edge of fibroblasts aids in cell motility. Singer’s lab identified “zip code” regions in mRNAs that are responsible for regulating mRNA localization.…
In his second talk he reviews makeup of the plant cell wall and how hemicellulose, cellulose, and lignin can be broken down for use in aviation biofuel production. He describes the Joint BioEnergy Institute (JBEI) approach to maximize carbon efficiency at every step in the production of biofuels, from developing and feedstocks, deconstructing biomass, and use of microbes and enzymes to generate target intermediates for fuels. A major part of optimizing this process is the development of a one-pot process, in which conversion of biomass to fuel can be achieved in a single chamber.…
Biofuels have been around for decades, but interest in them has grown considerably in recent years due to climate change. While they have the potential to provide a sustainable and renewable way to power our transportation systems, Dr. Blake Simmons points out that in order to become a viable replacement for fossil fuels, biofuels must also be efficient and affordable at global scales. In his first talk, he provides an overview of the advantages of using biofuels and walks through the biochemical processes required in order to convert biomass into usable fuels. He also discusses the ideal properties for advanced biofuels, the projected markets for these fuels in the coming years, and some of the key challenges associated with optimization of advanced biofuel production.…
In his Part 3, Rutter emphasizes the challenge of mitochondrial protein synthesis. How do the components of the electron transport chain (ETC) assemble in the right stoichiometry at the right time? Rutter introduces the LYR family of proteins, which aid assembly of ETC components. LYR proteins interact with a common binding partner, the acyl carrier protein (ACP), via a unique fatty acyl moiety on ACP. Rutter’s group showed that ACP acylation is necessary for assembly of the ETC and activation of oxidative phosphorylation.…
In Part 2 of his talk, Rutter describes his group’s work to unravel the relationship between the activity of the Mitochondrial Pyruvate Carrier (MPC) and the behavior of numerous cell types, including cancer and stem cells. His group found that forced expression of the MPC in multiple stem cell models led to reduced “stemness” and proliferative capacity, and that MPC inhibition could promote organoid formation in culture and tumor formation in vivo. These data indicate an important link between mitochondria, metabolism, and cell behavior.…
Mitochondria are integral to the metabolism of eukaryotic cells, yet many of their properties are not fully understood. In Part 1 of this iBioSeminar, Dr. Jared Rutter lays out the foundational knowledge of mitochondrial structure and origin, and shares what is currently known about mitochondrial roles in metabolism, protein homeostasis, and signaling. He ends by highlighting a focus of his research group: to unravel the functions of uncharacterized mitochondrial proteins.…
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iBiology Podcast
In his second talk, Peters presents evidence that cohesin is indeed necessary for genomic DNA to fold into loops. Long range DNA interactions such as loops can be detected using a technique called Hi-C. Using Hi-C, Peters shows that depleting cohesin removes DNA loops, while depleting the proteins that remove cohesin from DNA, results in bigger DNA loops. In addition, CTCF appears to recognize specific sequences that define the base of the loops. Incorporating all of this data, Peters describes a model in which DNA is extruded by cohesin to form a loop and the boundaries of the loop are determined by CTCF. Peters explains that many questions about the mechanism of DNA loop extrusion and its importance in cells remain to be answered.…
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iBiology Podcast
It has been known for many years that the protein cohesin is necessary to join sister chromatids together before they are segregated during mitosis. Electron micrographs have shown that cohesin subunits form a ring complex which is thought to encircle the DNA keeping the chromatids together. When they need to separate during anaphase, the cohesin complex is removed by another set of proteins. In his first talk, Dr. Peters explains how observations that he and others made suggested that cohesin may have additional roles in the cell. For instance, cohesin is initially loaded onto chromosome arms at discrete sites and in much larger amounts than is needed for chromatid cohesion. Cohesin also was shown to co-localize on chromosomes with a DNA binding protein called CTCF. CTCF is known to regulate transcription by forming DNA loops. Peters explains that, taken together, these observations hinted at a role for cohesin and CTCF in folding DNA into loops to allow efficient packing of very large eukaryotic genomes into small cell nuclei, and regulating functions such as gene expression.…
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iBiology Podcast
In his third talk, Patel explores the function of additional Hox genes in the development of crustacean body plans. Using CRISPR-Cas9 genome editing, his laboratory has characterized the expression and function of six of the nine Hox genes in Parhyale, and describes the combinatorial role of Ubx, abdA, and AbdB in the development of specialized appendages in this species, and how changes in the regulation of abdA is responsible for several morphological transitions during crustacean evolution.…
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iBiology Podcast
In the second lecture, Patel describes the work of his lab to expand the studies of Hox gene function to other arthropods. Patel describes the development of specialized body parts in crustaceans, and describes the transition between feeding to locomotor appendages. Using the beach hopper, Parhyale, his laboratory, in collaboration with the laboratory of Michalis Averof, showed that Ubx controls the boundary and transition between feeding and locomotor appendages during development.…
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iBiology Podcast
1 Nipam Patel Part 1: Patterning the Anterior-Posterior Axis: The Role of Homeotic (Hox) Genes 34:46
Homeotic (Hox) genes are transcription factors that dictate the development and compartmentalization (regionalization) of body parts in animals along the anterior-posterior (head to tail) axis. Using various insects and crustaceans, Dr. Nipam Patel studies how alterations in the expression of Hox genes could explain the evolution of specialized body parts in arthropods. Patel describes the spatially restricted patterns of Hox gene expression, explains the effects of Hox gene deletions, and how these phenotypes help us understand the manner in which Hox genes act to control the insect body plan. Taking a closer look at the pattern of the Hox gene Ultrabithorax (Ubx) in different insects, Patel summarizes the discovery that what drives changes in the number of wings during insect evolution is the not changes in the expression pattern of Ubx, but the regulation of its downstream gene targets.…
In her second seminar, Parast explains the different models to study human placental development in-vitro. Scientists can derive induced pluripotent stem cells (iPSCs) from umbilical cord cells. Parast’s laboratory first differentiates the iPSCs into trophoblasts cells which can then generate the different cells found in the placenta. Her laboratory uses these placental cells to study developmental complications by comparing cells derived from normal pregnancies to cells derived from non-normal pregnancies (e.g. patients born from mothers with pre-eclampsia).…
Dr. Mana Parast provides an introduction to placental development, the organ that every mammalian embryo needs for proper growth and development. The placenta derives from trophoblasts, embryonic cells located in the outermost layer of the embryo. Pre-eclampsia and other maternal factors can hinder placental development and therefore affect the development of the fetus. A better understanding on how defects associated with pregnancy disorders affect placental development could lead to novel therapeutics in the future.…
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