“'When laboratory mice suffer brain damage, e.g., from an injection, research group leader Jan Deussing has observed that a certain type of cell always appears and is activated in the immediate vicinity of the injury site. However, the experienced neurobiologist was unable to explain what kind of cells these were. This was a good project for a master’s student to take a closer look at. This is how Clemens Ries came into play, who had joined the Max Planck Institute of Psychiatry for an internship shortly before completing his biology degree.”
Above from;
https://medicalxpress.com/news/2025-12-stress-hormone-brain.html