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Wild-type B. burgdorferi B31 A3 and the isogenic DNA repair mutants ΔuvrB and ΔmutS were exposured to 0, 0.1 or 0.5 mM H2O2 in HN buffer +0.2% glucose in the (A) absence or (B) presence of 2.5 mM pyruvate for 2 h. Percent survival was calculated by enumerating CFU. Data represent the mean +/− SD (n = 4). Two-way ANOVA was used to determine significance (* p<0.01).
