Most vaccines contain an infectious pathogen or a part of it, but mRNA vaccines deliver the genetic instructions for our cells to make viral or bacterial proteins themselves. Our immune system responds to these and…

Research in mice reveals that immune cells in the brain constantly survey their neighborhood for overexcited nerve cells. The findings could shed light on neurological conditions in which nerves are “hyperexcitable,” such as epilepsy and…

Researchers have assessed how effective various medical and consumer-grade masks are at protecting the wearer from exposure to particles similar in size to SARS-CoV-2.In a new study, scientists have analyzed how effective consumer-grade masks, medical…