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Effects of pregrowth in 200 ng ml−1 3-oxo-C6-HSL (indicated by “+AI”) and outgrowth in the light (light bars) or dark (dark bars) on survival of V. fischeri ES114, the ΔluxCDABEG mutant EVS102, or the Δphr mutant EW1 following exposure to 12,000 μJ/cm2 UV. Percent survival was calculated relative to non-UV-exposed cells. The data represent means with standard errors for three independent cultures of each strain.
