A: Release of ciprofloxacin (CIP) from PDLLA: PEO nanofibers immediately after immersion into PBS, and 2, 3, 4, 6, 24 and 48 h thereafter, B: <i>in vitro</i> antimicrobial activity of CIP-containing nanofibers (CIP-F) against <i>P</i>. <i>aeruginosa</i> PA01 and <i>S</i>. <i>aureus</i> Xen 30, C: cell density of <i>P</i>. <i>aeruginosa</i> PA01 exposed to nanofibers without CIP (CF) and D: cell density of <i>S</i>. <i>aureus</i> Xen 30 exposed to CF and CIP-F.

<p>The control was without nanofibers and without CIP. Data points represent an average reading recorded from three disks per time point and three independent experiments (mean ± standard deviation). * <i>p</i> < 0.05. <i>ns</i>: not significant.