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Colonization of C57BL/6 mice by derivatives of C. rodentium. The data are the means and standard errors of the mean for feces from at least five individual mice at selected time points after inoculation. Mice received (via oral gavage) 2 × 109 CFU of C. rodentium wild-type strain ICC169 (▪), regA deletion mutant EMH1 (▿), or trans-complemented regA mutant EMH1(pEH4) (•).
