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Questions About Cancer? 1-800-4-CANCER

NCI Dictionary of Cancer Terms

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GM-CSF   

  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 granulocyte-macrophage colony-stimulating factor and sargramostim.