Figure 5 a: Detection of related inflammatory factors in serum by ELISA. b: Detection of related inflammatory factors in the spleen by ELISA.c: Detection of inflammatory factors in the spleen by PCR. d: Detection of inflammatory factors in the colon by PCR. 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).