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The S. aureus MgrA regulator is important for nor gene over-expression. Cocultures of S. aureus Newman wild type (WT) and ΔmgrA mutant with PA30 were performed. RNAs were extracted at 8 hours and nor gene expression was monitored by RT-qPCR. The results are shown as the mean + standard deviation of three independent experiments. Dotted lines indicate fold change = 2. Statistical analysis was performed by unpaired t-test (*P < 0.05).
