402919.fig.002a
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402919.fig.002b
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Figure 2: Microscopy of P. aeruginosa under the ciprofloxacininduced SOS response. The wild-type (PAO1) and the LexA noncleavable (lexAN) strains were grown in LB with shaking for 2 hrs, and then ciprofloxacin (CPX) was added (1 μg/mL). The culture continued for 6 hrs. (a) PAO1 without and (b) with CPX. (c) PAO1 with 5 μg/mL CPX. (d) lexAN without and (e) with CPX. (f) lexAN with 5 μg/mL CPX. Arrows in (c) and (f) show damaged and lysed cells. Cell bar, 5 μm. Inset (b) shows transmission electron microscopy of OMVs from the treated wild-type cultures. Inset (e) shows lexAN OMVs. OMV bar, 0.1 μm.