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The interference of different concentrations of LL-37 on exotoxin A (A), elastase (B), and pyocyanin (C) in P. aeruginosa when compared with PAO1 alone. LL-37 at doses of 250, 125, 62.5, and 31.25 µg/mL were used. *, statistical significance (P<0.05) compared with PAO1; **, statistical significance (P<0.01) compared with PAO1. PAO1, wild-type P. aeruginosa strain; PA-ΔlasI/rhII, double mutant P. aeruginosa strain; P. aeruginosa, Pseudomonas aeruginosa.
