Altered expression of STAT5 target genes in Flt3-ITD mice. Transcriptional expression of STAT5 target genes in GMPs, pre-GMPs, and LSKs from Flt3^+/+, Flt3^+/ITD, Flt3^ITD/ITD, and Flt3^−/ITD mice. Mean (SD) results (shown as expression relative to Hprt) of 2 experiments with 4 replicates analyzed in each experiment.