Fig. 3

Drug behavior within antibiotic-loaded and PLL-coated NPs in PBS at 37 °C. a Cumulative release profile of RIF from NPs and PLL-functionalized NPs in PBS at 37 °C. b Zeta potential evolution of charge-reversed and antibiotic-loaded NPs in PBS at 37 °C. Values are means ± SD of three measurements for one representative experiment out of two independent ones