Hematologic parameters of Gata1 knockout mice rescued by HRD-driven Gata transgenes. Mice of the genotypes indicated were bled at an age of 8 to 12 weeks, and hematologic parameters were determined. For all parameters, values for the WT animals were normalized to 1. RBC = red blood cells; HCT = hematocrit; HGB = hemoglobin; PLT = platelets; error bars indicate ± SD. Significant difference: *, P < .05; **, P < .01, compared with WT; #, P < .05; ##, P < .01, compared with HRD-G2::G1KO:Y (unpaired t test).