Fig. 4

Growth curve analysis of Acinetobacter baumannii treated with Cec4. Cec4 and the positive control polymyxin B at concentrations of 1× MIC or 2× MIC added to A. baumannii cultures. The bacterial concentrations were detected at 600 nm every 2 h for 24 h. Fresh culture medium was used as the negative control. Bars represent the mean ± SEM of three independent experiments. Means were compared using Student’s t-test (1× MIC vs control: 12 h, t₍₆₎ = 2.16, P = 0.01; 24 h, t₍₆₎ = 1.47, P = 0.025). *P < 0.05, significantly different compared with the control