Questions About Cancer? 1-800-4-CANCER
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NCI Dictionary of Cancer Terms


  One of a group of related proteins made by leukocytes (white blood cells) and other cells in the body. IL-7 is made by cells that cover and support organs, glands, and other structures in the body. It causes the growth of T lymphocytes and B lymphocytes. IL-7 made in the laboratory is used as a biological response modifier to boost the immune system in cancer therapy. IL-7 is a type of cytokine. Also called interleukin-7 and lymphopoietin-1.