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NCI Dictionary of Cancer Terms

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NCI Dictionary of Cancer Terms



IL-5   

  One of a group of related proteins made by leukocytes (white blood cells) and other cells in the body. IL-5 is made mainly by some T lymphocytes. It causes B lymphocytes to make more antibodies and increases the number of eosinophils. IL-5 made in the laboratory is used as a biological response modifier to boost the immune system in cancer therapy. It is a type of cytokine. Also called interleukin-5.