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Comparison of gentamicin (GS) release rate from GS films with and without barrier layers: (A) Schematic of the No-barrier GS film (G60) and the Barrier GS film (G30L10G30L10). (B) Cumulative release profile of GS from G60 (□) and G30L10G30L10 (○). (C) The increment of GS release measured between each time point. The barrier layers control interlayer diffusion, which leads to a more sustained release. The dotted lines are drawn to aid the eye.
