The researchers have done a «remarkable job» of recruiting and studying a rare population, says Thomas Perls, a geriatrician at Boston Medical Center in Massachusetts. (sciencemag.org)
The researchers, led by Benjamin Humphreys, MD, PhD, found that a rare population of stem cells located outside of blood vessels in mice become myofibroblast cells that secrete proteins that cause scar tissue. (sciencedaily.com)
Sousa, senior author Nenad Sestan, and their team found a rare population of interneurons that produce dopamine and is enriched in the human striatum, but did not make a similar finding in chimp, bonobo, or gorilla brains. (seeker.com)