CSF (colony-stimulating factor)
A laboratory-made agent similar to a substance in the body that stimulates the production of blood cells.</P> The colony-stimulating factors (CSFs) include granulocyte colony-stimulating factor (G-CSF) and granulocyte-macrophage colony-stimulating factor (GM-CSF).</P> Treatment with colony-stimulating factors can help the blood-forming tissue recover from the effects of chemotherapy and radiation therapy.