Figure 2.

The activities of levofloxacin and Cath-A against the established biofilms of P. aeruginisa (a) and A. baumannii (b) at different concentrations (4–256 µg/mL). The antibiofilm effect of the peptide and levofloxacin was assessed by cv staining after 24 h of incubation. Biofilm formation was determined by measuring the absorbance at 595 nm using a microplate reader. Controls were untreated inoculated bacteria in Mueller Hinton (MH) broth. Data are shown as the mean ± SD of three independent tests. Significant different values were (# p < 0.05) vs controls and (* p < 0.01) with antimicrobial agents.