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| Group | 1 | 2 | 3 | 4 | 5 | 6 | 7 | Negative control | Blank |
|---|---|---|---|---|---|---|---|---|---|
| LL-37 concentration (μg/mL) | 1,024 | 512 | 256 | 128 | 64 | 32 | 16 | 0 | 0 |
| PAO1 | − | − | − | + | + | + | + | + | − |
| PA-ΔlasI/rhII | − | − | − | + | + | + | + | + | − |
“+”: turbidity and bacterial growth; “−”: clear fluid and bacterial inhibition. PAO1, wild-type P. aeruginosa strain; PA-ΔlasI/rhII, double mutant P. aeruginosa strain; P. aeruginosa, Pseudomonas aeruginosa; Negative control, untreated group; Blank, sterile saline.
