“Cross-phenotyping” of IL-3Rα⁺ and IL-3Rα^– BM progenitors for CD34 and FcγR expression. Lin^–c-Kit⁺Sca-1^–IL-7Rα^– cells (black gate in panel B) were stained for CD34 versus FcγR expression and resolved (E) into CD34⁺FcγR^lo (CMP), CD34⁺FcγR^hi (GMP), and CD34^–FcγR^lo (MEP).⁶  For comparison, c-Kit⁺lin^–Sca-1^–IL-7Rα^– cells were sorted into IL-3Rα^– (A) and IL-3Rα⁺ (C) subsets, and then restained for CD34 and FcγR expression. c-Kit⁺IL-3Rα^– cells include MEP and CMP phenotypes (D), and c-Kit⁺IL-3Rα⁺ cells include GMP and CMP phenotypes (F).