Analysis of CMPs, GMPs, and MEPs from e14.5 fetal liver. Representative e14.5, PU.1^+/+ (n = 2), PU.1^+/-(n = 5), or PU.1^-/- (n = 3) fetal liver samples were stained with c-Kit^APC, Sca-1^TexasRed, Lin^{biotin/streptavidinPE-Cy5}, FcγII/III^PE, and CD34^FITC and then analyzed by FACS. The percentage of CMPs, GMPs, and MEPs among total fetal liver cells is indicated. The percentages of Sca-1-cells are given as a percentage of the c-Kit⁺Lin^- subset.