True about MHC

Ref Harrison 16/e p1930; Robbins 7/e p204_ 205 Also involved in autoimmune disease, involved T cell function MHC class II molecules are a class of major histocompatibility complex (MHC) molecules normally found only on professional antigen-presenting cells such as dendritic cells, mononuclear phagocytes, some endothelial cells, thymic epithelial cells, and B cells. Thesecells are impoant in initiating immune responses.