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Attenuation of SL1344 by deletion of trxA. BALB/c mice were infected intravenously with 103 CFU of SL1344, SL3261, or SL1344 trxA. Bacterial counts in spleens and livers at days 1 and 3 postinfection are shown as the mean log10 CFU per organ with standard errors from one experiment that is representative of three experiments with similar results. *, P < 0.05; **, P < 0.001, versus infection with SL1344 by one-way ANOVA with Bonferroni's correction for multiple comparisons (n = 3).
