Interleukin. Definition

Medical Definition: Interleukin

Low molecular weight protein secreted by cells of the immune system, which acts on white blood cells or leukocytes. It belongs to a group of related proteins made by leukocytes (white blood cells) and other body cells. Interleukin regulates immune responses. The interleukins that are produced in the laboratory are used in the treatment of cancer as a biological response modifier to boost the immune system. Interleukin is a type of cytokine. Also called IL.

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