Bacterial counts, neutrophil migration, and IFN-γ concentration in the peritoneal cavity. (A) Bacterial counts in the peritoneal fluids collected from CLP-treated mice at 6 hours after CLP surgery. WBB6 F₁^+/+ (wild type; ●), WBB6 F₁-W/W^v (mast-cell deficient; ○), wild-type BMMC–reconstituted WBB6 F₁-W/W^v (▴), and p40^−/− BMMC–reconstituted WBB6 F₁-W/W^v mice (▵). Results are expressed as log₁₀ of CFU per cavity (n = 4 mice). Horizontal bar represents the mean. (B) Neutrophil migration into the peritoneal cavity of CLP-treated mice at 0 or 6 hours after CLP surgery. WBB6 F₁^+/+ (■), WBB6 F₁-W/W^v (□), wild-type BMMC–reconstituted WBB6 F₁-W/W^v (hatched bar), and p40^−/− BMMC–reconstituted WBB6 F₁-W/W^v mice (dotted bar) in panels B-C. Data represent mean ± SD of 5 mice and *P < .05; significantly different from the mean value of the corresponding control in panels B-C. (C) Concentration of IFN-γ in the peritoneal cavity of CLP-treated mice at 0 or 6 hours after CLP surgery.