Fli-1 gene deletion increases the number of bone marrow bipotent MEPs. (A) Histogram showing the percentages of the different classes of multipotent progenitors in BMCs from injected Cre⁺ or Cre⁻Fli1^fl/Fli1^Δ mice (means and SD from 13 different couples of injected Fli1^fl/Fli1^Δ Cre⁺ and Cre⁻ mice). Asterisk and NS indicate significant (P < .05) and nonsignificant differences (P > .05) in paired t test, respectively. (B-D) Diagrams showing the variations in the number of the indicated progenitors in Cre⁺ mice with respect of the extent of Fli-1 gene deletion. Dotted lines and gray areas indicate the mean and SD of the percentage of the corresponding progenitors in Cre⁻ mice.