Evidence of autoimmunity’s origins uncovered via new approach
Autoimmune diseases are thought to be the result of mistaken identity. Immune cells on patrol, armed and ready to defend the body against invading pathogens, mistake normal human cells for infected cells and turn their weapons on their own healthy tissues. In most cases, though, finding the source of the confusion the tiny fragment of normal human protein that looks dangerously similar to a protein from a pathogen has been challenging for scientists.