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(a) Kaplan–Meier survival plots of worms infected with the indicated Escherichia coli strains are shown. Infections were performed at 25°C, and worm mortality was monitored every day. E. coli CFT073‐fed worms were taken as control. (b) Survival of Caenorhabditis elegans fed heat‐killed E. coli strains. n = 60. Statistical analysis was evaluated by Log‐rank (Mantel‐Cox) test; asterisks indicate significant differences (**p < 0.01; ***p < 0.001; ns: not significant)
