FIG. 3.
Fecal cell counts of 1:361 and 1:361ΔQ-pR′ and Stx2 concentration. Streptomycin-treated CD-1 mice were intragastrically inoculated with either 1:361 or 1:361ΔQ-pR′. Stool samples were collected daily, and the Stx2 concentration (top) and the number of CFU (bottom) of either 1:361 or 1:361ΔQ-pR′ were determined. Gray bars represent mice inoculated with 1:361, and black bars represent mice inoculated with 1:361ΔQ-pR′. There were eight mice in each group. Means and standard deviations are presented.