gata2^hi and mpx^hi granulocytes differentially express genes that are important for eosinophil or neutrophil development and function, respectively. gata2^hi and mpx^hi cells were isolated by FACS (purity ≥ 95%) from WKM. Transcript abundance was measured from either gata2^hi (black bars) or mpx^hi cells (white bars) by quantitative polymerase chain reaction analysis. Expression of the gene of interest was normalized to that of ef1α. Data are mean ± SD (n = 3 or 4). *P < .05. **P < .001.