Myeloid potential of Fog^ki/ki MEP. (A) CMP, GMP, and MEP were cultured in the presence of IL-3, IL-6, SCF, and EPO and scored at day 14 (n = 3). (B) Flow cytometric analyses of individual colonies with antibodies against Gr1 (granulocytes), Mac1 (macrophages), and Kit/FcϵR1α (MC). (C) MGG and Toluidine blue stains of representative MC containing colonies from CFU-MC/G/M and CFU-MC. MCs (mc), monocytes (mo), neutrophils (n), and eosinophils (e). Original magnification ×40.