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Cytotoxicity and stability assessment. (A) Cell viability of melanocytes (MC) and keratinocytes (KC) with increasing amounts of liposomes for 4 h. (B, C) Physicochemical and biological activity of lipoplexes during storage. The expression level of hBD-2 is relative to that of cells transfected with scrambled siRNA (100%). Data is shown as mean±SD (n≥3). P-values<0.05* compared to 5 µg mL−1 (A) or day 0 condition (B, C).
