The angel and the assassin : the tiny brain cell that changed the course of medicine

"Until recently, microglia were thought to be the boring little housekeepers of the brain, helpfully pruning away dead cells. But science now understands them to have a terrifying Jekyll and Hyde control over brain health. When triggered, they morph into destroyers, causing a wide range of issues: from memory problems and anxiety to depression and Alzheimer's. Under the right circumstances, however, microglia are indeed angelic healers, making re...