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Levi Todd

@levi-todd.bsky.social
192 followers 203 following 27 posts

Asst prof @ SUNY Upstate trying to regrow neurons Toddlab.org

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Reposted by Levi Todd
Patrick Kerstein @patrickkerstein.bsky.social · 18/09/2026
A new paper came out this week from our lab in @devbiol.bsky.social. This was work I started as a post-doc with @kevinmawright.bsky.social. Here, we investigated the role of Gbx2 and Robo receptors in dendrite stratification of amacrine cells in the retina. www.sciencedirect.com/science/arti...
sciencedirect.com
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Nicholas M Tran @nmtranlab.bsky.social · 10/09/2026
Our lab is recruiting! If you are interested in learning about retinal ganglion cell resilience and regeneration please see the Research Assistant I position listing below. We are looking for a candidate with experience in either mouse research or stem cell culture. jobs.bcm.edu/job/Research...
jobs.bcm.edu
Research Assistant I - Molecular & Human Genetics
Research Assistant I - Molecular & Human Genetics
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Phil Ruzycki @phruzycki.bsky.social · 08/09/2026
🚨 New preprint 👀! Led by Sohini Rebba in the lab, a collaboration with @clark-lab-retina.bsky.social & @macdonaldlab.bsky.social to improve the reference transcriptome for our studies of the killifish retina. 🐟
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Nick Silva @nicholasjsilva.bsky.social · 05/09/2026
Our @sfstatebio.bsky.social is offering an exciting opportunity for a tenure-track Assistant Professor position in Physiology beginning August 2027. We have a great community of colleagues and trainees from a variety of backgrounds. Link: careers.pageuppeople.com/873/sf/en-us... #STEMJobs
careers.pageuppeople.com
San Francisco State University - Details - Assistant Professor - Physiology - Department of Biology
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Levi Todd @levi-todd.bsky.social · 27/08/2026
First paper entirely from our lab is out in the wild! We tested if reprogramming still works in the aged CNS and found the aged retina blocks neurogenesis both intrinsically in Müller glia and through exacerbated inflammation. Then point at some ways to overcome this. www.pnas.org/doi/10.1073/...
pnas.org
Aging limits neuronal regeneration from glia in the mouse retina | PNAS
Reprogramming resident glia into neurons holds great therapeutic promise for neurodegenerative diseases across the central nervous system, yet thes...
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Joel Miesfeld @joelmiesfeld.bsky.social · 18/08/2026
I’m excited to share the newest publication from the lab where we charactize the zebrafish Atoh7 retinal lineage in wild type and Atoh7 mutants, discover an Atoh7 negative RGC population, and find lineage positive cells in the CNS outside of the optic tectum. iovs.arvojournals.org/article.aspx...
iovs.arvojournals.org
Lineage Tracing Reveals atoh7-Positive and Negative Retinal Ganglion Cell Populations in the Zebrafish Retina | IOVS | ARVO Journals
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Kevin Wright @kevinmawright.bsky.social · 14/08/2026
Excited to release the newest preprint from the lab into the wild. Super proud of @ninaluong.bsky.social, who did 99% of the experiments in this beast of a paper. Want to know more about some novel RGC subtypes? Buckle up! www.biorxiv.org/content/10.6... 1/9
biorxiv.org
A pooled genetic approach provides multimodal access to uncharacterized retinal ganglion cell subtypes
Retinal ganglion cells (RGCs) are the sole output neurons of the retina, responsible for transmitting visual information to the brain. Recent transcriptomic studies have revealed extensive molecular d...
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BrunetLab @brunetlab.bsky.social · 05/08/2026
Excited about our new manuscript @elife.bsky.social: Engulfment by brain macrophages in a short-lived vertebrate doi.org/10.7554/eLif...! Huge congratulations to Rahul Nagvekar and the team!! ✨⭐🍾🐟 We generated a genetic model to identify engulfing macrophages in the #killifish aging brain!
doi.org
Engulfment by brain macrophages in a short-lived vertebrate
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Anna La Torre @latorrelab.bsky.social · 30/07/2026
My Department is HIRING! If you're excited about building an innovative research program and joining a collaborative community of scientists, we'd love to hear from you. Come be my colleague! #AcademicJobs #BasicScience #FacultySearch#AcademicJobs More details here: recruit.ucdavis.edu/JPF07708
recruit.ucdavis.edu
Assistant/Associate Professor- Cell Biology & Human Anatomy
University of California, Davis is hiring. Apply now!
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Juan Angueyra @juanonyme.bsky.social · 21/07/2026
Preprint for the first manuscript of the Angueyra Lab is out! We delve deep into cell-fate decisions during photoreceptor development and discover that the 𝘵𝘣𝘹2 paralogues play multiple roles to control the fate of the five photoreceptor subtypes in zebrafish.
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Carmen Falcone @carmenfalcone.bsky.social · 18/07/2026
The first work of the #FalconeLab is finally out!!! 🤩 A story of #astrocytes from evolution to disease. Thanks everyone who made this possible! Varicose projection astrocytes: Conserved reactive cells in brain pathology | #ScienceAdvances www.science.org/doi/10.1126/... @towsonu.bsky.social
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Zebrafish Rock! @zebrafishrock.bsky.social · 04/07/2026
JOB ALERT 🚨 The Mumm Lab @jhu.edu (mummlab.wordpress.com) is hiring a Postdoctoral Researcher to lead a new fishy project focused on identifying cues driving retinal regeneration, in collaboration with @jamesthierer.bsky.social. More details in the reply below ⬇️ #ZebrafishJobs 🧪
Response of retinal Muller Glia (Orange) to photoreceptor loss (Cyan) pre- and post-ablation.
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Anna La Torre @latorrelab.bsky.social · 13/05/2026
Excited to share our new paper! This work explores how Sonic hedgehog signaling helps coordinate retinal patterning and neurogenesis, including regulation of both cell cycle exit and progenitor competence during mammalian eye development journals.biologists.com/dev/article/...
journals.biologists.com
Roles of sonic hedgehog signaling in retinal patterning and neurogenesis during mammalian eye development
Summary: Temporal disruption of sonic hedgehog signaling reveals stage-specific roles in eye cup patterning and in regulating proliferation, progenitor competence and fate specification during retinal...
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Nick Silva @nicholasjsilva.bsky.social · 29/04/2026
My paper is finally out in @natcomms.nature.com ! 🐟🐭🧠 Thankful to the contributors and @annamolofskylab.bsky.social for the support! How does the developing brain clear millions of dying neurons? Read below, if interested. #zebrafish #neuroscience #microglia #devbio @zebrafishrock.bsky.social 1/5
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Revathi Balasubramanian @ladyglaucoma.bsky.social · 27/04/2026
I will be at ARVO and have a poster 3006 - 0256, May 5th at 1:15. Hope to connect with you all vision people!
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Anna La Torre @latorrelab.bsky.social · 21/04/2026
Our new paper is out! 🎉 Let-7 doesn’t act through a single pathway: it controls neocortical neuron fate and migration via distinct downstream mechanisms, with RBX2 dedicated to migration. A new layer of post-transcriptional control shaping cortical development www.pnas.org/doi/10.1073/...
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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Jingliang (Simon) Zhang @simonomisz.bsky.social · 18/04/2026
Excited to see my PhD work is now published @cp-cellreports.bsky.social ! In this study, we used human retinal organoids to investigate how cell death occurs and affects the development and survival of retinal ganglion cells (RGCs), the projection neurons in the eye /1 www.cell.com/cell-reports...
cell.com
Blocking apoptosis promotes survival and alters developmental dynamics of human retinal ganglion cells in retinal organoids
Zhang et al. found that two waves of apoptosis occur in developing human retinas and retinal organoids, affecting RPCs and RGCs, respectively. Retinal organoids undergo an additional wave of necrosis ...
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Anna La Torre @latorrelab.bsky.social · 17/04/2026
It's #FluorescenceFriday and these retinal astrocytes understood the assignment: branching, glowing, and casually laying down the blueprint for the retinal vasculature #Retina #ConfocalMicroscopy
Confocal microscopy image of retinal astrocytes
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Anna Vlasits @annaintegrated.bsky.social · 16/04/2026
The Vlasits Lab is hiring a technician because our current technician was accepted into a PhD program! This position combines lab management and experiments. If you are interested in gaining experience with #retina research in Chicago, please apply. vlasitslab.org uic.csod.com/ux/ats/caree...
vlasitslab.org
Vlasits Lab
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Michel Cayouette @michelcayouette.bsky.social · 13/04/2026
Our Commentary on the very nice recent paper from the @bobbyjeyeguy.bsky.social lab is finally out. A nice way to get a quick summary before diving into the full paper! Hope you like it. www.pnas.org/doi/10.1073/...
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
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Daniel Kerschensteiner @kerschensteiner.bsky.social · 09/04/2026
New study led by Ning Shen w/ @phruzycki.bsky.social: a genome-wide in vivo CRISPR screen in a retinitis pigmentosa mouse model identifies genes whose loss accelerates photoreceptor death. Overexpressing two, UFD1 and UXT, preserves photoreceptors, retinal function, and vision. 🧵
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Zebrafish Rock! @zebrafishrock.bsky.social · 23/03/2026
“The atoh7:iCre;ubi:Switch transgene combination successfully recapitulated the onset of endogenous atoh7 expression… We determined 79% of total RGCs in the wild type retina come from atoh7+ progenitor cells, a greater number than reported in the mouse retina” New from @joelmiesfeld.bsky.social 🐟
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Miranda Scalabrino, PhD @icanhasmiranda.bsky.social · 31/03/2026
I’m hiring a research tech to join my lab! Anyone interested can reach out to me for more information. This is a good opportunity for someone looking to expand their research skills prior to graduate school. mcw.wd503.myworkdayjobs.com/en-US/Extern...
mcw.wd503.myworkdayjobs.com
Research Technologist I - Ophthalmology & Visual Sciences
Summary The applicant will join the Scalabrino Lab at the Medical College of Wisconsin Eye Institute. The research explores how various blinding diseases change neuronal function of the retina, the li...
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Anna La Torre @latorrelab.bsky.social · 27/03/2026
Two Scientists walk into a bar and they meet with Deepak Lamba!! www.gene.com/stories/the-...
gene.com
The Wild World of Eyeballs
Featuring Deepak Lamba, Director and Distinguished Scientist, Ophthalmology, and Susie Crowell, Senior Director, Project Team Leader.
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Danny Saban @sabanlab.bsky.social · 24/03/2026
Resident tissue #macrophages (RTM) are now recognized as integral regulators of tissue physiology, not transient immune sentinels. one fundamental question remains unresolved: why do some populations achieve lifelong self-maintenance, while others are replaced under steady-state conditions? 🧵1/11
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Carol Schuurmans @carolschuurmans.bsky.social · 17/03/2026
Join us in Toronto, July 13–16 for the International Conference on Neurogenesis and Repair. Featuring keynote Dr. Jeffrey Macklis (Harvard), 13 short‑talk slots, poster sessions, and many trainee travel awards Details + registration: event.fourwaves.com/neurogenesis... Hope to see you there!
event.fourwaves.com
Neurogenesis and Repair 2026
Join Neurogenesis and Repair 2026, July 13-16, 2026. Learn more on Fourwaves.
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Justin Kumar @flyeyelab.bsky.social · 10/03/2026
The 2026 Visual System Development GRC and GRS are fast approaching. Jeremy Kay, Kristen Kwan, Robert Johnston, and I have built an exciting program that we hope you will enjoy. Looking forward to seeing everyone at the meeting this summer in beautiful Maine. Register and RT!
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Karthik Shekhar @karthikshekhar.bsky.social · 10/03/2026
New preprint from the group on the evolution of retinal cell types. Check the summary by Dario @dariotommasini.bsky.social !
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Bob Johnston @bobbyjeyeguy.bsky.social · 25/02/2026
I'm excited to share our PNAS paper from 1st author Kasia Hussey. We study how the foveola, the high acuity region of the retina, is patterned by RA and TH. We were surprised to find that cone subtypes appear to convert fates. Our studies are important for AMD sufferers. www.pnas.org/doi/10.1073/...
pnas.org
A cell fate specification and transition mechanism for human foveolar cone subtype patterning | PNAS
In the central region of the human retina, the high-acuity foveola is notable for its dense packing of green (M) and red (L) cones and absence of b...
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Michel Cayouette @michelcayouette.bsky.social · 04/02/2026
Happy to announce that our latest paper is now out! Have you ever wondered how neural tissues control their size? In this paper, we show that cell division orientation is critical in both the cortex and retina. www.science.org/doi/10.1126/...
science.org
Oriented cell divisions induce basal progenitors and regulate neural expansion across tissues and species
A fundamental role for division orientation in progenitor output driving cortical and retinal growth is revealed.
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Carol Schuurmans @carolschuurmans.bsky.social · 31/01/2026
Join us in Toronto, July 13–16 for the inaugural International Conference on Neurogenesis & Repair! Featuring keynote Jeffrey Macklis (Harvard) + global speakers. 13 competitive short talks, poster sessions, and separate trainee awards. Early‑bird deadline: March 31.
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Bob Johnston @bobbyjeyeguy.bsky.social · 05/01/2026
I'm so excited that @christ3na.bsky.social 's paper describing temporal control of photoreceptor development in human organoids is out at Genes and Dev and we got the cover! genesdev.cshlp.org/content/40/1... genesdev.cshlp.org/content/40/1...
genesdev.cshlp.org
Cover Photo — January 1, 2026, 40 (1-2)
A biweekly scientific journal publishing high-quality research in molecular biology and genetics, cancer biology, biochemistry, and related fields
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Yohey Ogawa @yohey-ogawa.bsky.social · 16/12/2025
🧬👁️ Our Science Advances paper is published! snATAC-seq analysis across lamprey to human retina uncovers deeply conserved cis-regulatory codes in all six retinal cell types — even with extensive enhancer turnover. Immensely grateful to my coauthors and collaborators. 🙏 www.science.org/doi/10.1126/...
science.org
Conservation of cis-regulatory codes over half a billion years of evolution
The regulatory codes controlling vertebrate retinal gene expression have been conserved over more than half a billion years.
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Justin Kumar @flyeyelab.bsky.social · 02/12/2025
Excited to announce that the newest paper from my lab on the Drosophila visual system is out today! Modulating the levels and activity of the retinal determination network is sufficient to induce the specification of distinct tissue fates in Drosophila url: journals.biologists.com/dev/article-...
journals.biologists.com
Modulating the levels and activity of the retinal determination network is sufficient to induce the specification of distinct tissue fates in Drosophila
Summary: Modulation of members of the retinal determination gene regulatory network and their co-factors in Drosophila eyes reveals that differential expression of transcription factors is sufficient ...
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Anna La Torre @latorrelab.bsky.social · 27/11/2025
Just a heads up: I just got a phishing attempt pretending to be from the #VisualSystemDevelopment #GRC. It looked pretty convincing at first glance, so be careful!
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Michel Cayouette @michelcayouette.bsky.social · 29/10/2025
Our latest paper is out! While the circadian photoentrainment circuit has been extensively studied, the mechanisms regulating its development remain poorly understood. Here we show that retinal Müller glia play a key role in this process. Check it out! www.sciencedirect.com/science/arti...
sciencedirect.com
Retinal glia regulate development of the circadian photoentrainment circuit
Circadian photoentrainment depends on intrinsically photosensitive retinal ganglion cells (ipRGCs), which convey environmental light information to th…
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Richard Sever @richardsever.bsky.social · 25/10/2025
That merely being “under review” by a Nature family journal is offered as a quality proxy for a paper is a tragic illustration of the extent to which academia is addicted to brands and outsources evaluation
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bioRxiv Neuroscience @biorxiv-neursci.bsky.social · 24/10/2025
Turquoise killifish naturally develop hallmarks of age-related macular degeneration with advancing age www.biorxiv.org/content/10.1101/202…
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Anna La Torre @latorrelab.bsky.social · 10/10/2025
It's #FluorescenceFriday!
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Jingliang (Simon) Zhang @simonomisz.bsky.social · 30/09/2025
Excited to share my PhD work! We characterize waves of cell death during human retinal development, and show how blocking apoptosis promotes RGC long-term survival and alters their developmental dynamics in organoids. These findings will improve future organoid design for retinal disease modeling‼️
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Anna La Torre @latorrelab.bsky.social · 17/09/2025
🎉 New preprints from the lab! (1) www.biorxiv.org/content/10.1...
biorxiv.org
Novel Roles of Sonic Hedgehog Signaling in Retinal Patterning and Neurogenesis During Mammalian Eye Development
The Sonic Hedgehog (Shh) signaling pathway is essential for the patterning, growth, and morphogenesis of many tissues. During early eye development, Shh is critical for the formation of the two optic ...
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Anna La Torre @latorrelab.bsky.social · 17/09/2025
New preprints from the lab!! (2)
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Joel Miesfeld @joelmiesfeld.bsky.social · 16/09/2025
A big thanks to the NEI for supporting my new R01 and MCW for highlighting the research focus. We’ve already made some interesting discoveries and I’m excited to see how the research progresses for years to come. www.mcw.edu/mcwknowledge...
mcw.edu
Preventing Blindness by Untangling the Genetic Network of Vision Neurons
Dr. Joel Miesfeld’s lab studies the mechanisms behind retinal ganglion cells to better understand vision development.
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Seth Blackshaw @sethblackshaw.bsky.social · 12/09/2025
Our latest manuscript is out, and this one tackles the problem of cellular aging in the retina, using comparative multiomic analysis of zebrafish, mouse, and humans. What led us to work on aging after studying development and regeneration? Explainer follows./1 www.biorxiv.org/content/10.1...
biorxiv.org
Comparative single-cell multiomic analysis reveals evolutionarily conserved and species-specific cellular mechanisms mediating natural retinal aging.
Biological age is a major risk factor in the development of common degenerative retinal diseases such as age-related macular degeneration and glaucoma. To systematically characterize molecular mechani...
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Dr. Brittany J. Carr @drbjcarr.bsky.social · 05/09/2025
Preprint! We localized polySia in the retina of 8 vertebrates, 2 cephalopods, human, and organoids. We determined that polySia is a useful surrogate marker for Müller glia, and that polySia distribution in fish Müller glia differs from all other vertebrates. 👀🧪 www.biorxiv.org/content/10.1...
biorxiv.org
Polysialic acid is a versatile marker for retinal Müller glia in common vertebrate model organisms and systems
Müller glia are retinal support cells that play crucial roles in tissue structure, waste management, and repair. A challenge for the field has been to find Müller glia markers that detect non-reactive...
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Patrick Vallely @pjvphotography.bsky.social · 28/08/2025
"Pat, why do you carry that ridiculous 600mm lens on long hikes?" Buddy, I can see mountains reflected in the eyes of a trailside pika.
A pika sits on a mossy rock.Tighter crop of the same pika, focusing on its head.An even tighter crop, focusing more on the pika's eye.An extremely tight crop of the pika's eye, emphasizing their reflection of an early morning mountain scene.
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Revathi Balasubramanian @ladyglaucoma.bsky.social · 22/08/2025
Excited to share this study! We created a developmental atlas of the anterior segment of the eye and provide crucial molecular information that guides the development of Schlemm’s canal and trabecular meshwork cell subtypes. www.biorxiv.org/content/10.1...
biorxiv.org
Single-Cell Characterization of Anterior Segment Development: Cell Types, Pathways, and Signals Driving Formation of the Trabecular Meshwork and Schlemm's Canal
Morphogenesis of the anterior segment (AS) is crucial for healthy ocular physiology and vision but is only partially understood. The Schlemm's canal (SC) and trabecular meshwork (TM) are essential dra...
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Brian Clark @clark-lab-retina.bsky.social · 06/08/2025
Our work on the TET enzymes in retinal development is out. We identified that rod fate is inhibited when DNA demethylation is prevented by removal of the TET enzymes. Interestingly, photoreceptor numbers are normal. We utilized WGBS and bACE-seq to profile the precise localization of 5mC and 5hmC,…
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Justin Kumar @flyeyelab.bsky.social · 05/08/2025
My lab's newest research paper on the Drosophila eye is published in Development today. Thanks to the editorial staff for writing a research highlight and interviewing us about our work. journals.biologists.com/dev/article-...
journals.biologists.com
Differential regulation of eye specification in Drosophila by Polycomb Group epigenetic repressors
Highlighted Article: Distinct gene sets are differentially expressed in response to the knockdown of Polycomb Group (PcG) members, suggesting that multiple avenues may exist for the eye to be transfor...
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Revathi Balasubramanian @ladyglaucoma.bsky.social · 29/07/2025
Paper alert! With co-first authors Nick Tolman and @taiboli.bsky.social , we profile trabecular meshwork cells using single-cell RNA + ATAC seq, identify mitochondrial dysfunction in an early-onset glaucoma model, and use Vitamin B3 to protect against nerve damage. elifesciences.org/reviewed-pre...
elifesciences.org
Single-cell profiling of trabecular meshwork identifies mitochondrial dysfunction in a glaucoma model that is protected by vitamin B3 treatment
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