Fig. 5

a: NLRP3 protein in macrophages at 0.5, 3, 6 and 9 h after E. coli HPI infection (NLRP3 staining, red; nuclear staining, blue); b: Caspase-1 protein in macrophages at 0.5, 3, 6 and 9 h after E. coli HPI infection (caspase-1 staining, green; nuclear staining, blue) c: Number of NLRP3 positive cells at 0.5, 3, 6 and 9 h after E. coli HPI infection. d: Number of caspase-1 positive cells at 0.5, 3, 6 and 9 h after E. coli HPI infection. *P < 0.05, **P < 0.01, n = 3