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Bioluminescence response of RM4440 to increasing doses of UV B in biofilm. (A) Total bioluminescence (nanoamperes). (B) Normalized bioluminescence (nanoamperes per CFU per milliliter). UV B doses (J/m2): ■, 0; ●, 25; ▴, 50; ⧫, 75; □, 100; ○, 110; ▵, 120; ◊, 125. Each point represents the mean of three independent experiments.
