cfu-gm cfu-gm cfu-gm, also known as granulocyte–macrophage progenitor (gmp), is a colony forming unit. it is derived from cfu-gemm. cfu-gmlineage. captions in polish, but "gmp" visible near bottom center.detailsgives rise tomonoblasts and myeloblastslocationbone marrowfunctioncolony forming unitidentifiersmeshd055014thh2.00.04.3.02009 anatomical terms of microanatomy the "gm" stands for "granulocyte, monocyte". it is the precursor for monoblasts and myeloblasts. production is stimulated by granulocyte macrophage colony-stimulating factor (gm-csf). granulocytes there is some controversy over which granulocytes derive from cfu-gm. there is little disagreement that neutrophils come from cfu-gm. some sources state that basophils also derive from cfu-gm, but that eosinophils come from "cfu-eos". other sources state that basophils do not derive from cfu-gm, but from a distinct cfu, titled "cfu-baso".