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Effects of UV-B radiation on the survival of different bacteria collected during the stationary phase. The data are expressed as percentages of the initial counts (∼108 CFU ml−1) and are means (± standard deviations) based on the data from two different experiments. Symbols: ▵, V. natriegens; ▴, P. haloplanktis; ○, S. typhimurium; ●, P. stutzeri; □, D. aquamarina; ■, strain RB2256.
