(A–D) WT mice were cohoused with Casp1(11)−/−, Casp1−/−, Asc−/− or Aim2−/− mice for two weeks and then exposed to 14.2 Gy of subtotal-body irradiation (SBI). Kaplan-Meier survival analysis of Casp1(11)−/− mice (A), Casp1−/− mice (B), Asc−/− mice (C), Aim2−/− (D) mice and their cohabitated WT mice was performed. Each figure represents the pooled data from two to three independent experiments. The total number of mice in each group and the p value by log-rank comparison are indicated on the plots. (E) Representative pictures of H&E staining of the jejunum from Aim2−/− mice and their cohabitated WT mice at day 0 and day 3.5 after 14.2 Gy of SBI. Scale bar=100 μm.