Figure S1. One-day biofilm formation. Biofilm formation of Acinetobacter baumannii CipS and CipR is shown. Representative results of three independent experiments are shown and data are the means ± S.D. p <0.05: * between MHB and inoculated groups, † between inoculated groups.

Figure S2. Mortality curves. Mice were infected with three different inocula (8.3, 7.3, and 6.3 CFU/mL) of Acinetobacter baumannii 77wt strain (black lines) and its ciprofloxacin resistant mutant 77R strain (gray lines). Mortality curves are analysed by Kaplan-Meier survival analysis.

Table S1. In vitro activity of ciprofloxacin against Acinetobacter baumannii strains in the presence and absence of PAβN and reserpine.

Table S2. Seven-day mortality monitoring in a murine model of peritoneal sepsis. Mice were infected with three different inocula of Acinetobacter baumannii CipS and CipR.

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