Fig. 1.

Bactericidal activity in vitro of the peptide against P. aeruginosa PA14 and PA14 ΔexsA. Killing curves at different peptide concentrations (0, 4, 8, 16, 32, and 64 μg/mL) were performed using PA14 and PA14 ΔexsA. Data are presented as the mean ± standard deviation of three independent experiments. Statistical analysis comparing groups was performed by Student–Newman–Keuls t test. Significance was accepted when the P value was < 0.05. There was no difference between the bactericidal activities on these two bacteria