key term - Agglutination

Definition

Agglutination in the context of blood typing is the clumping of red blood cells (RBCs) in response to the action of an antibody. This reaction occurs when antibodies encounter their specific antigens on the surface of RBCs, leading to visible clumping that can be indicative of blood compatibility or disease.

Related terms

Antigen: A substance or molecule found on the surface of cells, including red blood cells, that triggers an immune response when detected by the body.

Antibody: A protein produced by the immune system that recognizes and binds to specific antigens, playing a key role in identifying and neutralizing foreign objects like bacteria and viruses.

Blood Typing:

A laboratory test used to determine an individual's blood type based on the presence or absence of certain antigens on the surface of their red blood cells