Gut 'primes' pathogenic T cells responsible for neuroinflammation in multiple sclerosis, study finds

Multiple sclerosis (MS) is a debilitating neurological disorder caused by malfunctioning immune responses that target the brain and spinal cord of the central nervous system (CNS). What makes the body turn against itself? Failure of the immune system to distinguish "self" from "non-self" entities leads to excessive autoimmune responses against self-proteins like myelin, which forms a protective covering on the neurons.