FIG 1.
Enumeration of persisters in the wild type and mutants with deletion of transcriptional regulators. Overnight cultures were diluted to an OD600 of 0.2 in fresh LB medium and treated with 5 μg/ml OFL. CFU levels were monitored for 5 h during treatment, and survival fractions were determined by dividing the CFU counts at each time point by that at time zero.