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McGill Biology
@biomcgill.bsky.social
McGill University's Dept of Biology explores fundamental questions about the origin, #evolution, development, and #behaviour of living organisms. #biodiversity #ecology #neurobiology #molecularbiology
Reposted by McGill Biology
November 28, 2025 at 9:56 PM
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Spectacular strawberry squid! Histioteuthis squid w/massively asymmetrical eyes: 1 larger for viewing the silhouettes of predators & prey above, & 1 smaller eye for capturing glimmers of bioluminescent snacks below. #AsgardArchea - 730m - ROV SuBastian / Schmidt Ocean Institute
November 29, 2025 at 1:56 AM
Congratulations to the Reyes Lab (McGill Biology) on their PNAS paper (www.pnas.org/doi/10.1073/...)! Using single-molecule microscopy in live bacteria they show that rapid recycling of the DNA polymerase keeps DNA replication running & prevents genome instability—reshaping our view of this process.
Genome integrity relies on rapid recycling of DNA Pol III in bacteria | PNAS
DNA replication requires precise coordination between DNA unwinding and DNA synthesis. In all domains of life, protein–protein interactions at the ...
www.pnas.org
November 28, 2025 at 10:30 PM
We held a panel discussion on Demystifying Graduate School, exploring how to choose between a Master's & a PhD, how to get involved in undergraduate research, and what to ask your prospective supervisor.
Check out the slides: www.mcgill.ca/biology/file...
and video: www.youtube.com/watch?v=vTwG...
Demystifying Graduate School
YouTube video by Steph Weber
www.youtube.com
November 28, 2025 at 10:24 PM
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For this week #FluorescenceFriday, we'll be treated with one of our favourite animal models 🐸 . Here is a Xenopus laevis embryo imaged with a Lightsheet microscope showing macrophage migration.
Purple🟣 = ectoderm nuclei, Red🔴 = macrophages.
📹: Hoang Anh Le, postdoc in the Mayor lab, UCL.
November 28, 2025 at 6:32 PM
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An adorable Platyhelminthes! I see that the classification has changed, so this is now subphylum Rhabditophora? Anyhoo, a real cutie!
#marineplankton 🦑
November 28, 2025 at 8:25 PM
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ROV SuBastian pilots need raises because CAN YOU SEE IT?! ROV SuBastian in the eye of this Taningia! @schmidtocean.bsky.social dive 871 #asgardarchaea #MarineLife
November 26, 2025 at 7:06 PM
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The remarkable wings of a 0.3mm long Alaptus minimus wasp of the Mymaridae. If you look closely toward the left end of the pair you can see the hamuli (hooks) that link the hindwing to the forewing.

#wasps #entomology
November 26, 2025 at 10:05 AM
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On Thursday, November 13, over 150 students, alumni, staff and faculty members gathered to celebrate the 20th anniversary of McGill's Bachelor of Arts and Science (B.A. & Sc.) program.

Read more about the event and this unique program ➡️ mcgill.ca/x/iyP

📸 by Alex Tran

@mcgillarts.bsky.social
November 25, 2025 at 6:57 PM
Reposted by McGill Biology
COP30: Quebec universities more united than ever for the climate 🌎 As the conference unfolds in Belém, Brazil, eighteen institutions are reaffirming the climate emergency and the need to combine their efforts and expertise to meet this global challenge. https://mcgill.ca/x/iCn
November 19, 2025 at 9:15 PM
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We had a great time at the McGill BGSA Retreat at Gault Nature Reserve this past weekend! 🌲❄️
@picard-m.bsky.social
@vanmierlo.bsky.social
@biomcgill.bsky.social
November 25, 2025 at 4:39 PM
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Never seen the death of a ciliate like this-- usually it's too much pressure from the coverslip or too much osmotic pressure. But this gradual posterior-to-anterior "unzipping" effect amazed me !

Motic BA310e - 40x Objective - sped up 2X
#microscopy #Paramecium #Iteachbiology #edusky
November 17, 2025 at 2:25 PM
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Axonal pathfinding of zebrafish retinal ganglion cells forms the optic nerve. Credit to Dr. Matthew Bostock @houartlab.bsky.social. #ZebrafishZunday 🧪
November 16, 2025 at 8:30 PM
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The rare & beautiful violet sea snail - a predator of Portuguese Man O’War & by-the-wind sailors. It lives its whole life at the surface of the open ocean, using a bubble raft to stay afloat. It’s normally more common in warmer waters but occasionally seen here
#marinebiology #marinelife #oceanlife
November 17, 2025 at 7:03 PM
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This week's #FluorescenceFriday, we'll be treated with one of the classical models of #devbio, the neural crest cells. Here is a beautiful video of neural crest cells with GFP-tagged focal adhesion kinase (🔵) and LifeAct-RFP (🟣) migrating on a Fibronectin matrix.
📹: Adam Shellard
November 14, 2025 at 5:45 PM
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🌊 Developmental biologists say gastrulation is the most important moment of your life… and this sea urchin is making sure it looks fabulous for the occasion 💅
🔴 Laminin 🟢 Skeletal cells 🔵 Membranes 📸 Image from David McClay #FluorescenceFriday #DevBio
November 14, 2025 at 9:17 PM
The most northeasterly woolly mammoth find ever in North America. Discovered by Louis-Philippe Bateman, MSc student in Prof. Hans Larsson's lab in McGill's Dept of Biology.
www.miragenews.com/mammoth-toot...
Mammoth Tooth Sheds Light on Ice Age Life in Canada
A worn-down mammoth tooth discovered nearly 150 years ago on an island in Nunavut offers new insights into where and how the Ice Age giants lived and
www.miragenews.com
November 13, 2025 at 8:34 PM
Are you curious about graduate school in biology, neuroscience, or a similar field?

The McGill Biology EDI committee is holding an event aimed at taking some of the mystery out of graduate school.

Come to our panel discussion to have all your questions about graduate school answered!
November 13, 2025 at 8:29 PM
Reposted by McGill Biology
Torch coral waves in the Coral Morphologic coral museum #coralmorphologic #miami #coralcity
November 13, 2025 at 5:29 PM
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Hydra (Hydra vulgaris) ✨Small but mighty! Hydra can regenerate its entire body, even its head 🧠 A classic model for regeneration, stem cell dynamics, and body axis patterning 📸 Image by Daniel Bressan de Andrade #ModelMonday #DevBio #Regeneration
November 11, 2025 at 2:28 AM
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Oh, I love this. A new species of sea anemone was discovered recently that parks itself on top of a hermit crab shell like a hat. It seems to feed partly off the crab's faeces, but it also excretes a hard shell that extends the crab's home. In return, it's carried around the seafloor like a king.
November 10, 2025 at 9:57 PM