Figure 2 a: 24 h results of mouse faecal smear culture. b: The number of bacteria excreted by mice in each group . The WT normoxia control group (NC), MPO-/- normoxia control group (KC), WT C. rodentium infection group (NI), MPO-/- C. rodentium infection group (KI),WT hypoxia control group (HC), MPO-/- hypoxia control group (HKC), WT hypoxia C. rodentium-infected group (HI) and MPO-/- hypoxia C. rodentium-infected group (HKI ).