Plasma cell

Definition

Plasma cells are specialized white blood cells that produce antibodies. They play a crucial role in the adaptive immune response by identifying and neutralizing pathogens like bacteria and viruses.

5 Must Know Facts For Your Next Test

1. Plasma cells originate from B lymphocytes after activation by an antigen.
2. Each plasma cell produces a single type of antibody specific to one antigen.
3. Plasma cells have an extensive rough endoplasmic reticulum for antibody production.
4. They are primarily found in bone marrow, but can also be located in lymph nodes and spleen.
5. Plasma cells have a limited lifespan, typically living for only a few days to weeks.

Related terms

B Lymphocyte: A type of white blood cell that differentiates into plasma cells and memory B cells upon activation.

Antibody: A protein produced by plasma cells that binds to specific antigens to neutralize or mark them for destruction.

Antigen: A substance that triggers an immune response, often recognized as foreign by the immune system.