granulocyte-macrophage colony-stimulating factor

Definition / meaning of granulocyte-macrophage colony-stimulating factor

A substance that helps make more white blood cells, especially granulocytes, macrophages, and cells that become platelets. It is a cytokine that is a type of hematopoietic (blood-forming) agent. Also called GM-CSF and sargramostim.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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