Clonal expansion

Definition

Clonal expansion is a process in the adaptive immune response where specific T lymphocytes that recognize an antigen proliferate to produce many copies of themselves. This amplification helps the immune system mount a strong defense against pathogens by increasing the number of cells that can respond to the infection.

Related terms

Adaptive Immune Response: A highly specific immune response that tailors its attack to precisely target pathogens or foreign substances identified in the body.

T Lymphocytes (T Cells): A type of white blood cell crucial for immune responses, responsible for killing infected host cells, activating other immune cells, and regulating the immune response.

Antigen: Any substance that causes your immune system to produce antibodies against it, including viruses, bacteria, and foreign bodies like pollen