FIG. 6.
Colonization of C57BL/6 mice with derivatives of C. rodentium. The data are the means and standard errors of the means for feces from at least five individual mice at selected time points after inoculation. Mice received (via oral gavage) 2 × 109 CFU of (A) C. rodentium wild-type strain ICC169 (▪) or adcA deletion mutant EMH2 (□) or (B) wild-type strain ICC169 (▪) or kfc deletion mutant EMH3 (○). The limit of detection is indicated by a dotted line. *, P < 0.05; **, P < 0.005 (two-tailed Student's t test).