Cellular immunity

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Cellular Immunity

Cellular immunity (pronounced: sel-yuh-ler ih-myoo-ni-tee) is a type of immunity that involves the activation of phagocytes, antigen-specific cytotoxic T-lymphocytes, and the release of various cytokines in response to an antigen.

Etymology

The term "cellular immunity" is derived from the Latin word "cellula" meaning "a small room", and the Latin word "immunitas" meaning "exemption". It refers to the immune response that is carried out by white blood cells or leukocytes, which are the cells involved in protecting the body against both infectious disease and foreign invaders.

Related Terms

  • Antigen: A substance that induces a specific immune response and can stimulate the production of antibodies or sensitized T-cells when introduced into the body.
  • Cytokines: A group of proteins, peptides or glycoproteins that are secreted by specific cells of the immune system and carry signals locally between cells, promoting cell-to-cell communication and interaction.
  • Phagocytes: Cells that protect the body by ingesting harmful foreign particles, bacteria, and dead or dying cells.
  • T-lymphocytes: A type of white blood cell that is of key importance to the immune system and is at the core of adaptive immunity, the system that tailors the body's immune response to specific pathogens.

See Also

External links

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