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Effect of a fur mutation on the expression of the bfr and rpoS genes of E. chrysanthemi. (A) bfr messenger accumulation in the wild-type (WT) strain and the fur mutant. (B) Expression of the rpoS gene in the wild-type strain and the fur mutant. Bacteria were grown in L medium and collected during growth as indicated by the OD600. bfr and rpoS transcripts were detected by Northern blot analysis as described in Materials and Methods.
