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Survival of P. aeruginosa cultures treated with 10 μg ml−1 tobramycin for 24 h. (A) Survival in samples taken after 4 h in first-generation cultures. (B) Survival in samples taken after 18 h in first-generation cultures. (C) Survival in samples taken after 4 h in second-generation cultures. (D) Survival in samples taken after 18 h in second-generation cultures. The percent survival was based on CFU in treated versus untreated cultures. Bars represent means with SEM. ON, overnight.
