Figure 1: Growth curve of P. aeruginosa PA-13572. P. aeruginosa was exposed to media without antibiotics (filled circles), in the presence of sub-inhibitory concentrations of 1/2 MIC of L-NAC [ 625 mg/L] (open circle), 1/4 MIC of L-NAC [312.5 mg/L] (filled triangle), 1/2 MIC of F-NAC [ 2500 mg/L] (filled squares), or 1/4 MIC of F-NAC [ 1250 mg/L] (open triangle).The experiment was performed three times with means shown.