Early recruitment of 2 distinct 7/4⁺ (Gr-1^hi and Gr-1^int) populations in murine peritonitis induced with TG. (A) Flow cytometric analysis of 7/4, Gr-1 staining prior to and 3 hours after TG injection. (B) Forward and side scatter properties of total peripheral blood leukocytes, 7/4⁺Gr-1^int (R1), and 7/4⁺Gr-1^hi (R2) populations together with cell morphology of sorted bone marrow populations. Original magnification, × 40. (C) Time course of 7/4⁺Gr-1^hi (▪) and 7/4⁺Gr-1^int (♦) recruitment. Data shown are representative of 3 or more experiments (mean of 5 mice/group, ± SEM).