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FimR sRNA up regulates type 1 fimbriae gene expression in vivo. Quantitative real-time RT–PCR analysis of expression of the fimBEAICDFGH gene cluster was performed in (A) E. coli 536 + pZE2R-fimR relatively to E. coli 536 + pZE2R-null, (B) E. coli 536 + pZE21-antifimR relatively to E. coli 536 + pZE21-null and (C) 536 Δhfq::KmFRT relatively to 536 strains, cultured in LB medium statically at 37°C for 24 h (stationary phase).
