Major Histocompatibility Complex (MHC)

The Major Histocompatibility Complex (MHC) is a group of genes in our body that help the immune system recognize which cells belong to us and which might be harmful invaders like viruses or bacteria. MHC molecules act as displays on the surface of cells, showing fragments of proteins from inside the cell. If these fragments look foreign, immune cells can respond quickly to attack. MHC diversity varies among individuals, which affects how the immune system detects threats and also influences organ transplant compatibility. Overall, MHC plays a crucial role in immune defense and maintaining health.