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Christopher Thomas

@ovarylab.bsky.social
1.2K followers 556 following 92 posts

Repro biologist | Group leader at the Marseille Developmental Biology Institute, CNRS & Aix-Marseille Université 🇫🇷 He/him. We use #LiveImaging to study how the dynamic #ovary makes healthy #eggs 🔬🥚 www.ibdm.univ-amu.fr/team/control-a…

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Reposted by Christopher Thomas
Biomedical Picture of the Day BPoD @bpodaily.bsky.social · 28/09/2026
The ovary actively 'counts' its eggs, preparing the same proportion for ovulation, at different stages of life 📹 Arturo D’Angelo et al @bokelab.bsky.social @crg.eu in @nataging.nature.com ➡️ bpod.org.uk/archive/2026... with John Ankers
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Maik Bischoff @maikbischoff.bsky.social · 21/09/2026
1/23 I have fantastic news! I am truly honored to have been awarded an Emmy Noether-Grant by @dfg.de @uni-muenster.de Since most of you are not from Germany, I will use the following posts to explain what this Program is, who Emmy Noether was and what my group in Münster will be doing. #cellbio
A picture of me and the Emmy Noether Program Logo
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bioRxiv Cell Biology @biorxiv-cellbio.bsky.social · 17/09/2026
Cnidarian oocytes reveal conserved actin-driven mechanisms of female meiosis www.biorxiv.org/content/10.64898/20…
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Sachin Kotak @spindlebehavior.bsky.social · 15/09/2026
Can light build centrosome-like activity? 💡🔬 Yes! We introduce LISA (Light-Induced Spindle Assembly), now in @emboreports.org. By clustering Aurora A with optogenetics, we build centrosome-like activity that nucleates microtubules and rescues spindle defects after centrosome loss. shorturl.at/9h3VQ
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Barriga Lab @eliasbarrigalab.bsky.social · 12/09/2026
Cngratulations to @JoanaESaraiva and Sandra from the lab on their new review @embojournal.org we discussed few points about the coordination of cell state transitions in #embryos and #regeneration Also welcome @joanaesaraiva.bsky.social to BlueSky! link.springer.com/article/10.1...
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Jack Rhodes @jackrhodes.bsky.social · 10/09/2026
An embryo-derived peptide signal directs endosperm polarity in Arabidopsis
science.org
An embryo-derived peptide signal directs endosperm polarity in Arabidopsis
Angiosperm seed formation requires the coordinated development of the products of double fertilization—the embryo and the endosperm. The endosperm mediates efficient nutrient transfer from surrounding...
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Floris BOSVELD @florisbosveld.bsky.social · 11/09/2026
Join us for the symposium Morphogenesis: Where Form Takes Shape Oct. 27-28 Institute Curie Paris Free attendance, but registration is required. Short talks and posters will be selected from submitted abstracts. Abstract submission deadline: Oct. 10, 2026.
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Kate Cavanaugh @katecavanaugh.bsky.social · 10/09/2026
Absolutely ecstatic to share that WE GOT THE COVER!!! 🥹🎉 Seeing this on NCB's cover feels surreal. So much time, science, and teamwork went into this project, and I couldn’t be more excited to see it celebrated like this. A very, very happy day for this really really old and grown embryo 🐭🧫💥
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Teresa Rayon @trayon.bsky.social · 09/09/2026
Our article is on the COVER of this month’s issue of @cp-devcell.bsky.social! Congrats to all the authors for the hard work, especially Shota, Despina and @jamesbriscoe.bsky.social
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Prisca Liberali @priscaliberali.bsky.social · 08/09/2026
What if we stop asking only how cells build tissues and ask how tissues shape cells? That’s what we’ll explore at Modelling Life from Tissues to Cells 🇨🇭 lakeconferences.org/conf/8334d9b...
lakeconferences.org
Conference - Modelling Life from Tissues to Cells: Coordination and Robustness - Lake Conferences
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Anh Hoang Le, PhD 🏳️‍🌈🏴󠁧󠁢󠁳󠁣󠁴󠁿🇻🇳 @anhhle2702.bsky.social · 07/09/2026
Very happy to share my postdoc paper is out now in @natcellbio.nature.com titled "Tissue flow acts as a guidance cue for immune cell polarization and directional migration". If you love imaging and immune cells, this is for you! #microscopymonday www.nature.com/articles/s41... A 🧵: 1/n
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Christopher Thomas @ovarylab.bsky.social · 06/09/2026
🤩
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epithelial mechanics fan club @epimechfc.bsky.social · 06/09/2026
Hi! I’m @vitoryang.bsky.social, a PhD candidate studying how cells migrate collectively during development. My work focuses on cytoskeleton dynamics and Rho GTPase signalling, using Drosophila border cells as a genetically tractable in vivo model.
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Christopher Thomas @ovarylab.bsky.social · 06/09/2026
🤩
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FocalPlane @focalplane.bsky.social · 03/09/2026
We are excited to invite you to the second webinar in our cell migration series. In this webinar, we focus on new models for studying cell migration with talks from @ankita13jha.bsky.social, @raphclement.bsky.social & @katrinavelle.bsky.social. More info⤵️: focalplane.biologists.com/2026/09/03/f...
FocalPlane features... emergent models and quantitative analysis of cell migration
Thursday 17 September, 15:00-16:30 BST (UTC+1) 
Organised by Organised by Pablo J. Sáez and Valeria Venturini
FocalPlane logo
Picture of Ankita Jha (National Institutes of Health, USA)
Decoding bleb driven signaling in cancer disease progression
Picture of Raphaël Clément (L’Institut de Biologie du Développement de Marseille (IBDM), France)
Navigating without neurons or muscles: Locomotion in Trichoplax
Picture of Katrina Velle (University of Massachusetts Dartmouth, USA)
Naegleria amoebae seek confinement and crawl persistently through narrow spaces
#FocalPlaneFeatures
focalplane.biologists.com
Image of Naegleria.
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Development @dev-journal.bsky.social · 04/09/2026
A developmental biologist's guide to mechanics Read this Primer from our special issue #DevSIextracellular by Jialing Cao, @raphclement.bsky.social, @pflenne.bsky.social and colleagues. journals.biologists.com/dev/article/...
Intracellular force-generating mechanisms drive tissue-scale mechanical behaviors. The central schematic provides an overview of the major cellular force-generating mechanisms in developing tissues and serves as the basis for the four surrounding panels, which illustrate how these mechanisms generate distinct tissue-scale mechanical behaviors. It includes actomyosin contractility, actin polymerization, cell–cell adhesion and ion transport through membrane channels. These processes generate and transmit forces within and between cells. (A) ATP-dependent ion transport establishes an osmotic pressure difference (ΔP), driving water influx into the lumen. Black radial arrows indicate the outward mechanical effect of the luminal pressure during lumen expansion. (B) Actin polymerization at the tissue edge generates protrusive forces that drive coordinated, directional collective cell migration. Here, leading edge refers to the advancing front of a moving cell group, featuring specialized lead
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CNRS Biologie @cnrsbiologie.bsky.social · 03/09/2026
#ResultatScientifique🔎| Des scientifiques découvrent dans l’ovocyte de souris une structure jusqu’alors inconnue, le « corps de Zollo ». ✍️ @mhverlhac.bsky.social @ovarylab.bsky.social 🔬 @cirbcdf.bsky.social @ibdm.bsky.social buff.ly/KFgvqMA
insb.cnrs.fr
Petit ovocyte deviendra grand grâce au Zollo body !
Pour dev
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Christopher Thomas @ovarylab.bsky.social · 03/09/2026
🙌🏼🥚🔬👇🏼
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Thibaut Brunet @thibautbrunet.bsky.social · 02/09/2026
🚨 New preprint alert! 🚨 Choanoflagellates reorganize their global cytoskeletal architecture within seconds to explore confined microspaces. This is the main PhD work of the amazing @maitefreired.bsky.social www.biorxiv.org/content/10.6... A tread 🧵⬇️
biorxiv.org
Rapid repurposing of microvillar content drives a flagellate-to-amoeboid switch in the closest relative of animals
Animal cells extensively remodel their cytoskeleton during differentiation and can notably switch between two major motility modes: flagellum-based swimming and actin-based crawling. We previously sho...
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@MEmilieTerret @memilieterret.bsky.social · 02/09/2026
Great speakers, great science, great location = great meeting! EMBO workshop Forces across scale April 27-30, 2027 in Porto. meetings.embo.org/event/27-for...
meetings.embo.org
Forces across scales
This EMBO Workshop on Forces Across Scales will provide an integrative perspective on mechanobiology, a rapidly advancing field that examines how mechanical forces shape biological systems across mol…
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mhverlhac.bsky.social @mhverlhac.bsky.social · 02/09/2026
Noemi Zollo's work is highlighted on the Collège de France website: www.college-de-france.fr/fr/actualite... Many thanks to the @cirbcdf.bsky.social , @college-de-france.fr, @cnrs.fr, @cnrsbiologie.bsky.social, @inserm.fr, @sorbonne-universite.fr, @ibdm.bsky.social
college-de-france.fr
Découverte d’un super-organite, le Zollo body, qui permet à l’ovocyte de mammifère de grandir | Collège de France
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Christopher Thomas @ovarylab.bsky.social · 31/08/2026
Excited to share this fantastic collaboration with the teams of @mhverlhac.bsky.social and @bokelab.bsky.social, where we identify and characterise the Zollo body — a transient RNP compartment that drives oocyte and follicle growth! 🥚🔬 www.science.org/doi/10.1126/...
Microscopy image of a growing oocyte enclosed within an ovarian follicle. Mitochondria are labelled in magenta, revealing the Zollo body as a distinct region next to the oocyte nucleus. Myosin II is shown in cyan, highlighting the surrounding cell structure.
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Felix Rico @felixrico.bsky.social · 31/08/2026
Our commentary "A FAIR road to a bioAFM databank" is out! Let by Claire Valotteau @dynamo-lab.bsky.social and Jean-Luc Pellequer @cea.fr IBS www.nature.com/articles/s41...
nature.com
A FAIR road to a bioAFM databank - Nature Methods
In this Comment, we direct attention to initial efforts to establish a high-quality databank of atomic force microscopy (AFM) data: bioAFM-DB. We outline the state of this endeavor, its challenges, an...
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Nicolas Di-Poi @nicolasdipoi.bsky.social · 31/08/2026
Ever wondered why snake embryos coil?🐍 A beautifully simple question with a fascinating answer: a growth mismatch between body & gut shapes the coil Our study from @helsinki-biotech.bsky.social @helsinki.fi with T. Miyashita & R.E. Diaz in @currentbiology.bsky.social www.cell.com/current-biol...
cell.com
How snake embryos coil
Snake embryos coil, but how and why they corkscrew remains unexplored. Weber et al. find that the embryos wind up clockwise via buckling of the rapidly elongating axial body against the slow-growing, ...
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Christopher Thomas @ovarylab.bsky.social · 31/08/2026
Excited to share this fantastic collaboration with the teams of @mhverlhac.bsky.social and @bokelab.bsky.social, where we identify and characterise the Zollo body — a transient RNP compartment that drives oocyte and follicle growth! 🥚🔬 www.science.org/doi/10.1126/...
Microscopy image of a growing oocyte enclosed within an ovarian follicle. Mitochondria are labelled in magenta, revealing the Zollo body as a distinct region next to the oocyte nucleus. Myosin II is shown in cyan, highlighting the surrounding cell structure.
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Raphaël Clément @raphclement.bsky.social · 27/08/2026
A developmental biologist's guide to mechanics, just out in Development! In which we learn about the three pillars of any mechanical model: forces, mechanical properties, and boundary conditions. @pflenne.bsky.social @alessandrochppr.bsky.social @caojialing1002.bsky.social @dev-journal.bsky.social
journals.biologists.com
A developmental biologist's guide to mechanics
Summary: A guide to mechanics in development: unlock how forces, material properties and geometry shape the forms of life.
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International Society of Developmental Biology @isdb.bsky.social · 27/08/2026
A very useful guide to all the jargons and concepts of mechanics used in #devbio from the lab of @raphclement.bsky.social and @pflenne.bsky.social. doi.org/10.1242/dev....
doi.org
A developmental biologist's guide to mechanics
Summary: A guide to mechanics in development: unlock how forces, material properties and geometry shape the forms of life.
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Laura Bianchi @laurafbianchi.bsky.social · 27/08/2026
Ever wondered how epithelial cells clear apoptotic cells while maintaining tissue cohesion?🍝🔗 Check our new paper in which we show that E-cadherin plays a dual role in regulating basal cortex dynamics upon phagocytosis while maintaining connected tissue organization www.nature.com/articles/s41...
nature.com
De novo E-cadherin/catenin complex formation controls basal epithelial mechanics and force transmission for apoptotic cell clearance - Nature Communications
Epithelial cells remodel their shape during phagocytosis while preserving tissue cohesion. Here, authors show that the E-cadherin/catenin adhesion complex is repurposed at phagocytic contacts, where i...
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BIST-Barcelona Institute of Science and Technology @bist.eu · 25/08/2026
🗺️ First 3D map of ovary throughout reproductive lifespan reveals it counts its own eggs A new study published in #NatureAging by @crg.eu researchers challenges the idea that ovaries are simply passive egg reservoirs @bokelab.bsky.social #BISTCommunity Learn more 👉 bist.eu/first-3d-map...
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Kate Cavanaugh @katecavanaugh.bsky.social · 25/08/2026
And finally—a bit of personal news: 🔬 I’m on the faculty job market this year! I’m looking for tenure-track opportunities where I can build a lab at the intersection of developmental biology, mechanobiology, reproductive biology & aging.
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Kate Cavanaugh @katecavanaugh.bsky.social · 25/08/2026
🧵 What if one reason fertility declines with age isn’t just genetic-but mechanical? Thrilled to share our new paper in @NatureCellBio : Elevated contractility drives implantation failure in mouse embryos from aged females… here’s what we found 👇 www.nature.com/articles/s41... 1/11
nature.com
Elevated contractility drives implantation failure in mouse embryos from aged females - Nature Cell Biology
Cavanaugh et al. show that embryos from aged mice have increased contractility and tissue viscosity on embryonic day 4.5, which leads to poor spreading and attachment. Similar age-associated mechanica...
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Maik Bischoff @maikbischoff.bsky.social · 25/08/2026
1/3 Very proud to announce that the Bischoff Lab has its first PhD student! 🎉 Juliette ( @juliettea.bsky.social ) already started with us in May, but she only recently joined Bluesky 😊 #cellbio #LifeofPI #devbio #PhD #morphogenesis
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Katja Wassmann @meiosis-mom.bsky.social · 22/08/2026
www.biorxiv.org/content/10.6...
biorxiv.org
Set mediates chromosome alignment and Cohesin cleavage independently of direct PP2A-B56-binding in oocyte meiosis
Set promotes cohesion removal in mitosis by evicting phosphorylated Histone H1 and counteracting Sgo1. In addition, Set promotes chromosome alignment by counteracting Aurora B activation. The underlyi...
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Katja Wassmann @meiosis-mom.bsky.social · 22/08/2026
Please see our latest 2 preprints! www.biorxiv.org/content/10.6...
biorxiv.org
Low-input proteomics enables proteome and phosphoproteome-scale molecular phenotyping of separase-deficient oocytes
We performed a comprehensive quantitative proteomic analysis of mouse oocytes using as few as 40 oocytes per condition, comparing wild-type and separase knockout oocytes at metaphase I and metaphase I...
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Needhi Bhalla 💅🏽 @needhibhalla.bsky.social · 21/08/2026
Excited to have this out in the world! @lacefieldlab.bsky.social and I discuss meiotic checkpoints, with a focus on how they may be tuned both in and across systems to reflect the mechanistic trade-offs, evolutionary constraints and unique goals and innovations of meiosis. 🧪
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Böke Lab @bokelab.bsky.social · 12/08/2026
What does an ovary actually look like as it ages—one oocyte at a time? We mapped >85,000 oocytes in >100 intact mouse ovaries, in 3D, across the reproductive lifespan. And the ovary turned out to be much more organized than we expected. 🧵 1/5 www.nature.com/articles/s43...
nature.com
Three-dimensional mapping of intact ovaries reveals the aging dynamics of the ovarian reserve - Nature Aging
The spatiotemporal dynamics of the depletion of the ovarian reserve remain incompletely understood. Combining whole-ovary imaging, AI and modeling, the authors mapped over 85,000 mouse oocytes and fou...
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Felix Rico @felixrico.bsky.social · 08/08/2026
Excited to share our latest preprint! 🧬 Coiled coils are essential structural motifs in proteins but how do they move over time? Using high-speed AFM and MD simulations, we developed a quantitative framework to describe the dynamics of coiled coils in bacterial and human DNA repair complexes.
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Teresa Rayon @trayon.bsky.social · 15/08/2026
Our work on the role of the proteasome in developmental tempo is out!!!! 🐭⌛️👤⏳ Six years after identifying an association between protein stability and developmental tempo, we now demonstrate a causal link between protein turnover and developmental tempo through proteasomal degradation
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Kristina Stapornwongkul @kstapornwongkul.bsky.social · 06/08/2026
First published teamwork of the lab 🎉! We wrote a review about emerging concepts of how metabolism promotes, regulates and changes during gastrulation. We hope it will be useful for anyone interested in the emerging field of developmental metabolism. www.sciencedirect.com/science/arti...
sciencedirect.com
A metabolic view of gastrulation: Coordinating signalling, epigenetics and morphogenesis
Gastrulation is the morphogenetic process by which the single-layered pluripotent epiblast is reorganised into the three germ layers and the basic bod…
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Cornelia Schwayer @cschwayer.bsky.social · 03/08/2026
I will be opening my research group at the Max Delbrück Center later this year to unravel the principles governing the unique context sensing capacity of the liver www.mdc-berlin.de/schwayer and am looking for enthusiastic PhD applicants.
mdc-berlin.de
Schwayer Lab
The mammalian liver possesses a regenerative capacity that is unmatched by any other organ. Following injury, liver epithelial cells can proliferate or even change their identity, enabling the organ t...
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Cornelia Schwayer @cschwayer.bsky.social · 03/08/2026
Looking for a PhD? Applications are now open for PhD positions at the Max Delbrück Center. 🧵 www.mdc-berlin.de/career/jobs/...
mdc-berlin.de
PhD Positions (m/f/d) in Biomedical Research
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Niakan Lab @niakanlab.bsky.social · 04/08/2026
We have a postdoc position available in the lab and would like to spread the word. Please apply if you are interested! www.cam.ac.uk/jobs/researc...
cam.ac.uk
Research Associate (Fixed Term)
We seek a highly motivated Postdoctoral Research Associate to join the laboratory of Professor Kathy Niakan. We are based in the Loke Centre for Trophoblast Research (LCTR), in the Department of Physi...
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Stefan Luschnig @luschnig.bsky.social · 04/08/2026
Interested in using #Drosophila genetics & advanced imaging combined with modeling to study inter-organ transport and epithelial dynamics? We’re hiring a #PhD student @uni-muenster.de, based at the Multiscale Imaging Center and @sfb1348.bsky.social Graduate School. Apply here tinyurl.com/ypx74a5d
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Luca Jovine @jovinelab.org · 03/08/2026
New preprint: how does one sperm protein "key" recognize two different egg-coat receptors — the real "lock", and a decoy? www.biorxiv.org/content/10.6...
biorxiv.org
How a single sperm protein recognizes highly divergent egg coat components
For successful fertilization, sperm must recognize and penetrate the egg coat, called vitelline envelope (VE) or, in mammals, zona pellucida (ZP). In abalone, sperm acrosomal protein lysin dissolves t...
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Yanlan Mao @yanlanmao.bsky.social · 30/07/2026
This epic paper, which has been a heroic 10 year journey for the lead author, Ricardo Barrientos, is finally out in Cell today! Many thanks to all co-authors, especially Billie Meadowcroft and Andela Saric for their beautiful MD simulations www.cell.com/cell/fulltex...
cell.com
Basement membrane turnover controls cell shape
Basement membranes are scaffolds of proteins, like collagen, that give organs shape. During development, basement membranes must adapt to the growing organ. We infer how fast the basement membrane ada...
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Christopher Thomas @ovarylab.bsky.social · 27/07/2026
Check out our new review in Reproduction! 💥🥚🔬 In “The explosion of life”, @anitabichisecchi.bsky.social, @petramikec.bsky.social and I explore how live imaging has shaped our understanding of ovulation, revealing the cellular and tissue dynamics that drive egg release. doi.org/10.1093/repr...
Seeing is believing: historical snapshots of ovulation. Representative stills from landmark live-imaging studies capturing periovulatory
dynamics and follicle rupture.
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Christopher Thomas @ovarylab.bsky.social · 27/07/2026
Check out our new review in Reproduction! 💥🥚🔬 In “The explosion of life”, @anitabichisecchi.bsky.social, @petramikec.bsky.social and I explore how live imaging has shaped our understanding of ovulation, revealing the cellular and tissue dynamics that drive egg release. doi.org/10.1093/repr...
Seeing is believing: historical snapshots of ovulation. Representative stills from landmark live-imaging studies capturing periovulatory
dynamics and follicle rupture.
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Akankshi Munjal @akankshi.bsky.social · 24/07/2026
Excited to share our latest! www.biorxiv.org/content/10.6... This was a highly collaborative endeavor– the best way to do science. We asked how a developing tissue achieves the right shape despite all the variability along the way. Short answer: Hydrostatic pressure. Read on for the long answer!
3D-rendered confocal image of the embryonic zebrafish inner ear (otic vesicle) showing fluorescently labeled cell membranes. Three translumenal epithelial pillars span the lumen, partitioning it into the three semicircular canals (purple arrow: anterior canal; yellow arrow: posterior canal; white arrow: lateral canal)3D rendering of the segmented otic vesicle lumen at 3 days post-fertilization, showing the three connected fluid-filled compartments corresponding to the anterior, posterior, and lateral semicircular canals. The segmentation shows the characteristic geometry of the canals and the spaces partitioned by the transluminal epithelial pillars.
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Turlier lab @turlierlab.bsky.social · 24/07/2026
Very happy to have this work finally published! How do embryos sculpt their shape? We map the contractile & adhesive forces shaping early C. elegans embryos. With K. Yamamoto @ittoku04.bsky.social G. Charras' lab @gcharras.bsky.social & my team @turlierlab.bsky.social shorturl.at/xv7G5 1/6
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Nicolas Minc @minclab.bsky.social · 21/07/2026
Latest work from the team driven by our fantastic post-doc Maribel Arjona. Using cytoplasm extract fractions and active rheology, we adress how endomembranes, that pack the cell interior, influence the mechanics of the cytoplasm! @ijmonod.bsky.social @cnrsbiologie.bsky.social
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