Official the lab website is live! 🩸
Ghersilab.com. If you want to learn more about what we do or if you just want to look at some pictures, have a look! We will be hiring soon; stay posted! Centre de recherche Azrieli du CHU Sainte-Justine Université de Montréal

Adult zebrafish - Eye.

The optic nerve (seen bottom left) plugs into the eye going through the retina, creating a blind spot.

For light to reach the retina, it must first pass through the lens (top), and then a layer made of axones and blood vessels.
At the bottom right is an…

#FluorescenceFriday - Atlantic Cod thymus
Key genes known as mhc2 and cd4 are crucial to produce antibodies and for survival in human (e.g. diseases like AIDS). However, in an astonishing twist of biology, the Atlantic cod can generate antibody responses despite completely…

Comparison of monomeric variants of StayGold
biorxiv.org/content/10.110…

Tiny, translucent glassfrogs increase their transparency two- to threefold while sleeping by temporarily storing red blood cells in their liver, according to a 2022 study in Science.

Learn more: scim.ag/5Wv #ScienceMagArchives

Great to see this study coming out in its final form soon 🥳 Lucie Gerber has done a GREAT job with this project which started with master student Tellef, and she got Julien Rességuier 🇪🇺 🇫🇷 🇳🇴 involved too, so we got some amazing immuno-reactivity images Department of Biosciences, University of Oslo #anoxia #cruciancarp

Our featured image, this #FluorescenceFriday , is from Julien Rességuier Julien Rességuier 🇪🇺 🇫🇷 🇳🇴. The image shows the branchial cavity lymphoid architecture of an adult zebrafish.
Find out more about Julien’s research in our blog post!
focalplane.biologists.com/2023/12/22/fea…

Cod gills - Adductor muscles. Fish can 'cough' by contracting skeletal muscle fibers associated to gill filaments.

To the left is a mucosal epithelium, adductor muscle fibers to the middle, and afferent artery to the right.
Actin is orange and nuclei in blue.

Thrilled that our publication in Science Immunology made the journal cover. Contrary to current dogma, we show that cold-blooded vertebrates evolved organized secondary lymphoid microstructures with germinal center-like functions. science.org/doi/10.1126/sc…

Just a quick image of an adult zebrafish liver for #FluorescenceFriday :)

Jumping on this bandwagon. This Great Tree of Life (GToL) is made with DALL-E. For every 10 likes I will ask ChatGPT to make this tree of life even GREATER!!

#FluorescenceFriday Adult zebrafish branchial cavity - Immune cells (cyan).

Acquired in the anterior region of the branchial cavity, how many tissues can you identify ?

Transversal orientation: Actin in grey/copper, DAPI in blue, ZAP70 in cyan.
#Science #Microscopy #Sciart …

We opened my very first art show yesterday.
The highlight were the lovely amazing guests who travelled often very long ways to celebrate with us.

Months of work and the help of many made all of this possible.

Today we will celebrate some more 😊🔬

#FluorescenceFriday
Adult zebrafish mouth - T/NK cells (ZAP70 yellow),
Sagital cryosection.

Whereas these immune cells are abundant within the squamous epithelia lining the oral mucosa and the skin, they are absent from the keratinized epithelium lining the lips of the fish.…

🎉 Exciting News! 🎉 Thrilled to announce that I will be joining the Centre de recherche Azrieli du CHU Sainte-Justine and Université de Montréal as an assistant professor ! Stay tuned if you are looking to work with fish and cell fate in the Vascular and Blood systems. 🐠🩸

How do T cells regulate the germinal center reaction? Come join us as a postdoc in The Laboratory of T cell biology and Immunoregulation🧬🧬🔬 #ScienceCareers #Postdocjobs #Tcellbiology #VaccineResearch
jjacobsenlab.com/we-are-hiring

Glad to have an image short listed in the category 'micro' in CUPOTY competition.

Image: Blood vessels, connective tissue, and muscle fibers in zebrafish.

cupoty.com/micro-shortlis…

#FluorescenceFriday
Adult zebrafish immune cells (blue)
- Junction site between the branchial cavity (right), the pharynx and the oesophagus.
-Gills to the right
-Atrium, venus sinosus,ultimobranchial gland and intestinal bulb at the bottom.

Actin (copper) and Cell nuclei…