×
Login

Human leukocyte antigen (HLA)

The human leukocyte antigen (HLA) system or complex is a group of related proteins that are encoded by the major histocompatibility complex (MHC) gene complex in humans.[1] These cell-surface proteins are responsible for the regulation of the immune system. The proteins encoded by HLAs are those on the outer part of body cells that are (in effect) unique to that person. The immune system uses the HLAs to differentiate self cells and non-self cells.