(a, b) Numbers of neutrophils (a) and macrophages (b) in the peritoneal live cell population analyzed by flow cytometry (Gr-1+ CD11b+ cells for neutrophils and F4/80+ CD11b+ for macrophages). Data in a and b are shown as mean + SEM with squares representing values from individual mice (n = 5 or 13 for wild type mice in a and b, respectively, and n = 10 for basophil-deficient mice in a and b). (c-j) Concentrations of TNF, IL-6, KC, and MIP-2 in the peritoneal cavity (c, e, g, i) and plasma (d, f, h, j) of ROSA-DTα and Basoph8 x ROSA-DTα mice at 24 h after CLP. Data are shown as means + SEM with squares representing values from individual mice (n = 15 in c, n = 20 in d, n = 5 in e, g–j and n = 14 in f for ROSA-DTα; and n = 10 in c-f, i, j, n = 8 in g, and n = 4 in h for Basoph8 x ROSA-DTα mice). Data were pooled from n = 3 independent experiments performed, each of which gave similar results. P values by Mann-Whitney test.