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(A) SBF indexes of AIEC strain LF82 and nonpathogenic E. coli strain MG1655 with or without RseAB overexpression. Data are the mean ± the SEM of three separate experiments. (B) SBF index of isogenic mutant LF82-ΔrpoE transcomplemented with pBAD30-rpoE and grown in the presence of 0.00, 0.31, 0.63, 1.25, 2.50, 5.00, or 10.00 g · liter−1 arabinose. Data are the mean ± the SEM of three separate experiments. **, P < 0.01; ***, P < 0.001; N.S., not statistically significant.
