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Analysis of rpoE promoter activity using a reporter construct. (A) Growth of RS021 containing the rpoE reporter plasmid (▪) and the RS020 control strain (□). (B) Flow cytometric analysis of RS021 and RS020. GFP fluorescence is shown as the mean fluorescence intensity (MFI) of the bacterial population, which was calculated by using the FlowJo software version 4.6.2. The data presented are means ± standard error of the means and are representative of three experiments.
