This is fascinating! Congrats @brunetlab.bsky.social & colleagues! Cool findings on vascular/pericyte & meningeal/perivascular fibroblast cell types - important to exercise to keep those 🧠 blood vessels young and functional 🏃‍♀️🏋️‍♂️...but also what are the fibroblasts up to?!? 👀 🧪 #BBB #fibroblast