FIG 2 .

CFT073 rpoS is more sensitive to oxidative stress in vitro than wild type. CFT073 and CFT073 rpoS were grown overnight in LB medium and diluted 1:1,000 into PBS–5 mM H₂O₂ or an equivalent volume of distilled water (dH₂O). Cells were then incubated at 37°C and were enumerated every 5 min by plating onto LB agar. Data from four independent experiments are represented as mean percent survival ± standard error of the mean (SEM) relative to bacterial counts at t = 0.