FIG 6.
CXCR2 expression in blood circulation and Peyer's patches' neutrophils. Expression of cell surface CXCR2 on circulating neutrophils isolated from the peripheral blood and in neutrophils of Peyer's patches (PP) 3 days postinfection (dpi) with Y. enterocolitica WT or ΔyopH (5 × 108 CFU). (A) Representative overlaid flow cytometry histogram analysis showing CXCR2 expression on neutrophil (CD11b+ F4/80− CD11c−) gate compared with PBS mice. Isotype control (gray peak). (B) The average CXCR2 mean fluorescence intensity (MFI) levels are indicated. The data are the summary results of 2 experiments. Each symbol represents an individual mouse; horizontal lines indicate the means (*, P < 0.05; ns, not significant).