FIG 7.

Expression profiles of genes when cells enter stationary phase. (A) Relative expression levels of RpoS-regulated genes were obtained from a published study (47) for four time points following entry into stationary phase. All expression values were normalized to those from the final time point for each gene. The graph shows the range of relative expression values for insensitive, linear, and sensitive genes for each time point. Boxes represent the 25th to 75th percentile ranges, and horizontal lines indicate the median values. (B) Results of an experiment similar to that depicted in panel A but for a ΔrpoS strain of E. coli.