NCIt definition : A recombinant therapeutic agent which is chemically identical to or similar to the
endogenous glycoprotein cytokine growth factor granulocyte-macrophage colony stimulating
factor (GM-CSF). Therapeutic GM-CSF induces the clonal expansion and differentiation
of progenitor blood cells and stimulates the cytotoxicity of monocytes and neutrophils,
thereby restoring immune function and host antitumor immune responses and stimulating
engraftment of transplanted bone marrow tissue. (NCI04);