FIGURE 2.

Photoinactivation of Pseudomonas aeruginosa with RB in the presence of antimicrobial peptides. The cells were incubated with rose bengal alone (RB), antimicrobial peptide (PEX or CAM) alone, or with rose bengal and one of the antimicrobial peptides together (RB+PEX or RB+CAM). Results for PEX are shown in (A), for CAM in (B). The concentrations of compounds are indicated on the abscissa. In the case of RB and AMP mixtures, cells were either kept without light application (dark) or they were illuminated with a total light dose of 30 J/cm². Each result is a mean ± SE of log₁₀ CFU/ml. Significance at respective p-values is marked with asterisks (^∗p = 0.002 for PEX, and ^∗p = 0.003 for CAM). Arrows indicate the lowest effective concentration of RB/AMP resulting in a reduction of bacterial cell number below the limit of detection.