Fig. 8

Time-dependent drug release from CS-PE films with varying glycerol content (A) Release of quercetin. (B) Release of silver ions. (C) Skin permeation of Quercetin. (D) Skin permeation of silver. Values were expressed as mean ± SD, **P < 0.01, ***P < 0.001 vs. CS-PE-2.5% Gly at respective times