Neutrophil migration in thioglycolate-induced peritonitis. WT, L-selectin^−/−, PSGL-1^−/−, and DKO mice given an intraperitoneal injection of thioglycolate. Absolute neutrophil counts (A,B) and macrophage counts (C,D) in the peritoneal exudates were determined 4 hours (A,C) and 8 hours (B,D) after the thioglycolate injection. Each circle represents the value of an individual mouse. Bars express the mean. *P < .05; **P < .01; ***P < .001.