leukocyte antigens

Leukocyte antigens are specific molecules found on the surface of white blood cells, which are key players in the immune system. These molecules help the immune system recognize and distinguish between the body’s own cells and foreign invaders like bacteria, viruses, or transplanted tissues. They are crucial for immune response coordination and are involved in processes like tissue compatibility in transplants. Think of leukocyte antigens as identification badges that tell the immune system which cells belong in the body and which are potential threats or foreign, enabling appropriate immune reactions.