antigen-antibody complexes

Antigen-antibody complexes are formed when antibodies, which are proteins produced by the immune system, recognize and bind to specific molecules called antigens. Antigens are often found on the surface of pathogens like bacteria and viruses. This binding helps the immune system identify and neutralize harmful invaders. When antibodies attach to antigens, they can mark these invaders for destruction by other immune cells or can neutralize them directly. This complex plays a crucial role in the body’s defense mechanism against infections and diseases.