Fig. 3.
Contribution of PAIs I536–V536 to i.v. virulence of UPEC strain 536. In two independent experiments, groups of 15 mice were infected with 5 × 108 cfu of strain 536 or its PAI deletion mutants. Survival curves were statistically analyzed by the log-rank test. ∗∗∗ indicates significant difference (P < 0.001).