immune system

(Newser) - Scientists have pinpointed two genes that may be linked to MS, signaling a breakthrough in the fight against the debilitating disease 20 years in the making. In separate studies published today by two medical journals, researchers revealed one specific gene receptor may trigger cells to inhibit the body's autoimmune reaction,...

(Newser) - Clinical depression may be treatable with bacteria, doctors at Bristol University posit. They got the idea when they observed lung cancer patients inoculated with harmless Mycobacterium vaccae who showed reduced symptoms and improved mental health. The brain produces serotonin as an immune response, the docs hypothesized, raising the low serotonin...