@fmikus.bsky.social
Postdoc @Dudin lab, UNIGE Previously EMBL HD Lots of microscopy of all different things. If it’s not big enough, make it bigger #UExM Views my own
Researcher Florian Wollweber standing next to a cryo-focused ion beam microscope in a laboratory, with technical infrastructure visible in the background.
The origin of eukaryotic cells continues to be one of the greatest mysteries in biology.
EMBL Grenoble is excited to welcome Florian Wollweber, who will use cutting-edge imaging techniques to study Asgard archaea — microbes closely related to our earliest ancestors. 🦠🔬
www.embl.org/news/people-...
And @veslemoykaen.bsky.social joining from far away Lausanne
22.01.2026 20:47 — 👍 0 🔁 0 💬 0 📌 0It was a really fun couple of weeks in the lab !
I also very much enjoyed being in full handle of the #Zeiss 3Dsim scope provided generously for us to explore the various samples.
This is part of our ExÂME project between @dudinlab.bsky.social @gautamdey.bsky.social Tom Richards and @moorefound.bsky.social
22.01.2026 17:18 — 👍 3 🔁 0 💬 0 📌 0The selection of samples was incredibly diverse, both across size but also across the tree. Thanks for being a fantastic bunch! Hope it will advance your research questions!
@alfredolpsousa.bsky.social @alinaks.bsky.social @godi.bsky.social @tvasilj.bsky.social
Give them a follow if you haven’t!
The Dudin lab and their expansion visitors having some well deserved friday drinks and games
A group of visitors in their lab coats busily working to get their cells and tissues expanded, stained and ready for microscopy
Over the last two weeks the Dudin Lab expanded two-fold and it’s been a blast!
We are hosting a group of amazing visitors that stopped by with their own species and samples to get started with expansion microscopy.
It was a ton of fun, very much looking forward to pictures to come ❤️
#ExpandThemAll
🔬🔦Our Imaging spotlight from @hiralshah.bsky.social & team highlights their U-ExM atlas of planktonic eukaryotes, including details on how you can explore this wonderful resource. Plus, check out Hiral’s top tips on getting started with expansion microscopy.
focalplane.biologists.com/2026/01/20/i...
On this day in 2021, I landed in a snowy, lockdown-silenced Heidelberg to start my lab. 5 years later we are a force to reckon with in our field, and the first generation are striking out on their own. I couldn’t be more proud, & grateful to them and our wonderful collaborators around the world 🌍 🧪
07.01.2026 10:08 — 👍 142 🔁 9 💬 6 📌 0
Another #notTHECover unfortunately.
But this gorgeous, Tron-like vibe, drawn by the amazing @munafomarzia.bsky.social for our recent #ExM work with @gautamdey.bsky.social & @centriolelab.bsky.social will still be printed out in the lab.
Read here: www.cell.com/cell/fulltex...
We hope that integrating models with data will unlock new predictive capacity for mixotrophs--and beyond. Huge thanks to Ginger for scouting us, and to collaborators @suleles.bsky.social, @gautamdey.bsky.social, @fmikus.bsky.social, Julian Jacobs, and Kevin Archibald for building skills & ideas!
11.12.2025 21:05 — 👍 19 🔁 3 💬 1 📌 0
We’re excited to announce the opening of the Geneva Expansion Microscopy Facility (GenExM)!
GenExM is a full-service U-ExM platform (U-ExM, Cryo-ExM, iU-ExM), delivering nanoscale imaging.
Led by Dr. Olivier Mercey, GenExM welcomes academic & industrial collaborations.
👉 www.unige.ch/genexm/
Preprint alert 🔔 Organosulfur compounds support carbon and energy metabolism in chemosynthetic symbiosis. Happy to see this cool collaboration with @organosulfur.bsky.social and others out 🥳
07.12.2025 10:14 — 👍 13 🔁 3 💬 1 📌 0So proud to watch Jana turn a side quest into an entire research programme. Couldn’t imagine a more well-deserved outcome. 😍
The mighty yeast reveals what we believe are general principles of centromere evolution!
Behind the curtain: communities.springernature.com/posts/counti...
#MEvoSky 🧪🌎
Our attempt to give multinucleate cells the spotlight they deserve (seriously, they’re everywhere), led by the fearless @mrosjac.bsky.social and with @Markus Ganter
doi.org/10.32942/X2M...
We’d love your feedback while this goes through the peer review process!
#MicroEvoSky
#ProtistsonSky 🧪🌏
How do new centromeres evolve while staying compatible with the division machinery?
Discover it in our new Nature paper! We show centromeres transition gradually via a mix of drift, selection, and sex, reaching new states that still work with the kinetochore.
👉 doi.org/10.1038/s41586-025-09779-1
So happy to announce our new preprint, “A geothermal amoeba sets a new upper temperature limit for eukaryotes.” We cultured a novel amoeba from Lassen Volcanic NP (CA, USA) that divides at 63°C (145°F) 🔥 - a new record for euk growth!
#protistsonsky 🧵
I’m very happy that our paper is now published in Angewandte Chemie! 👏 A Photoswitchable HaloTag for Spatiotemporal Control of Fluorescence in Living Cells.
↪️ onlinelibrary.wiley.com/doi/full/10....
Big thanks again to all co-authors (especially Bego) and collaborators for their contributions! 👏
New preprint 🥳! We made photoclickable HaloTag ligands to precisely control protein labeling on living cells. With it, we can do some cool multicolor stuff. Huge congrats to Franzi and all co-authors! Check it out 👇
www.biorxiv.org/content/10.1...
It is a collaboration between my lab (Uppsala U) and the labs of @dudinlab.bsky.social (Geneva U) and @filiphusnik.bsky.social (OIST). More info and how to apply here:
uu.varbi.com/en/what:job/.... (The use of AI for writing the motivation letter is discouraged and will be regarded unfavourably) 2/2
This is a glimpse of the cytoskeletal structures we found doing U-ExM in more than 200 species, now in Cell🤩: shorturl.at/6oHvi
Amazing collaboration between @centriolelab.bsky.social , @dudinlab.bsky.social and @gautamdey.bsky.social labs.
I believe last one is a 🕷️
#FluorescenceFriday
#Microscopy
(1/2) A new study from EMBL researchers and their collaborators provides unprecedented insights into the cellular architecture of over 200 species of plankton – tiny but ecologically critical marine organisms – using ultrastructure expansion microscopy.
Learn more: www.cell.com/cell/fulltex...
🥳 Today marks the start of the lab of former postdoc @florianwollweber.bsky.social at @embl.org Grenoble!
www.embl.org/groups/wollw...
Florian-- we will miss you dearly and wish you much success!
With us, Florian applied multiscale imaging 🔬to Asgard archaea ...👇
Excited to share my first PhD student’s @biorxivpreprint.bsky.social!
Tracking 5 dyes simultaneously Kavan Gor @embl.org tracks nascent #RNA folding during #ribosome assembly to correlate structural with functional information on single RNA molecules!
Check it out!
www.biorxiv.org/content/10.1...
Exciting day for the lab: our 1rst paper is officially out in @currentbiology.bsky.social 🥳 Wonderful collaboration wt @gautamdey.bsky.social showing how Cryo-ExM achieves consistent immunostaining in diverse diatoms, from the lab and the natural environment 1/n
#ProtistsOnSky
tinyurl.com/2zxaund7
Our new #ExÂME effort with the @moorefound.bsky.social, is scaling up with T. Richards & @gautamdey.bsky.social : antibody screens, optimized protocols, open-access imaging, and community training--> all toward a shared atlas.
👉 Join us: www.dudinlab.com
#ProtistsOnSky #CellBiology #Evolution
And it’s a double feature, as shown by @gautamdey.bsky.social ial & @floravincent.bsky.social for the sturdy #Diatoms! Also out today in @currentbiology.bsky.social 🌊
www.cell.com/current-biol...
🚨Our collaboration with @centriolelab.bsky.social & @gautamdey.bsky.social is out today in @cp-cell.bsky.social
We show that #Expansion #Microscopy is a broad-spectrum modality for Euks, enabling 3D phenotypic maps rooted to phylogeny.
#ProtistsOnSky #SciComm #SciSky
www.cell.com/cell/fulltex...
Great to see this finally published!
Metalog: curated and harmonised contextual data for global metagenomics samples
now out in @narjournal.bsky.social
academic.oup.com/nar/advance-...
Practicing some key steps of the expansion microscopy protocol w
It was a pleasure having so many people interested in learning expansion - even if the images did not look amazing
09.10.2025 11:29 — 👍 3 🔁 0 💬 0 📌 0
Marine doing the heavy lifting and transporting a dry shipper with many plunge frozen samples
Trip 3 and past the 100 species count! Thank you for hosting us in České Budějovice Julius and Galina (and everyone providing samples!), for the prime support, and a fantastic selection of cultures!
#expandthemall @moorefound.bsky.social @dudinlab.bsky.social @gautamdey.bsky.social & T. Richards
