Figure 2. Resident peritoneal macrophages are critical for the early FlaTox response in vivo.
(a–f) Mice were injected intraperitoneally with FlaTox and rectal temperature (a,c,e) or hematocrit (b,d,f) were measured after 30 minutes or at indicated times. (a–b) Bone marrow chimeric mice (KO = Nlrc4−/−; n=5). (c–d) Macrophage-depleted wild-type (B6) mice (n=3–6). (e–f) CD11b+ cell depleted FVB:CD11b-DTR mice (n=6–7). (g) Nlrc4−/− host mice injected intraperitoneally with 107 resident (Res) or thioglycollate-elicited (Thio) peritoneal cells or BMDM of indicated genotype. Rectal temperature was measured 30 minutes after intraperitoneal FlaTox (8 μg/g PA + 4 μg/g LFn-FlaA) injection. Data shown (± s.e.m.) are pooled from multiple experiments (g) or representative of at least three (a–f) independent experiments. ** p < 0.01; *** p = 0.0007 (Mann-Whitney t-test).