FIG. 1.

Antimicrobial activity measured by the luminescence assay. The relationship between viability (CFU) and luminescence of P. aeruginosa PAO1 expressing luminescence genes is shown. Bacteria were incubated with the indicated concentration of LL37 for 5 h, luminescence was measured, and surviving organisms were plated and counted. Studies were performed under low-salt (A) and high-salt (B) conditions. Values are expressed as the percentage of control in the absence of LL37. Symbols indicate mean and standard error of the mean (n = 4).