Human Leukocyte Antigens (HLA)

Human Leukocyte Antigens (HLA) are a group of proteins found on the surface of most cells in your body. They play a crucial role in the immune system by helping it distinguish between your own cells and foreign substances like viruses or bacteria. HLAs present small pieces of proteins (antigens) to immune cells, signaling whether the cell is healthy or infected. This system is vital for immune responses, organ transplants, and disease susceptibility. A good HLA match is important for transplant success, reducing the risk of rejection.