Comparison of expression ratios for bacterial H2O2-responsive genes after phagocytosis by normal or phagocyte oxidase–deficient neutrophils. Expression ratios for selected H2O2-responsive E. coli genes 7 minutes after initiation of phagocytosis by normal (filled bars, n = 5) or phagocyte oxidase–deficient (open bars, n = 4) neutrophils. Error bars reflect the SEM. P values adjacent to the gene labels are for the two-tailed t test comparison of data for each type of neutrophil.