Figure 2. Macrophage identification and mRNA expression level of IL-33 in mice peritoneal lavage fluid. (a) Immunofluorescence to detect CD11b expression in peritoneal lavage fluid; (b) mRNA expression level of IL-33 in sham operation, model,IL-33^-/-, and IL-33^-/- intervention groups (n = 5); ^&&p < 0.01 vs. sham operation group; ^{^^}p < 0.01 vs. model group;^##p < 0.01 vs. IL-33^-/- group.