Recovery of neutrophils from peritoneal lavage fluid at 4 hours after thioglycollate injection of Balb/c mice and C57BL/6 mice. Neutrophil recruitment to thioglycollate-induced peritonitis was almost completely blocked by 10E9.6 in Balb/c mice and partially reduced by 10E6 and 9A9 (A). In contrast, 10E9.6 had no effect in the same assay performed in C57BL/6 mice, either alone or in combination with P-selectin 5H1 (B). 10E6 alone had no effect on neutrophil recruitment, but reduced recruitment by 60% when combined with 5H1. *P < .05; **P < .01 v isotype control. Mean ± SEM in four mice per group.