CFU-GM

CFU-GM, also known as granulocyte–macrophage progenitor, is a colony forming unit. It is derived from CFU-GEMM. It is the precursor for monoblasts and myeloblasts. Production is stimulated by granulocyte macrophage colony-stimulating factor.

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".