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Optical density of lysates. Optical density of lysates from Melanoma (WM164 and WM1366) and normal keratinocyte (HaCaT) cells treated for 24 h with final concentrations of 50 µM RB incorporated in water, SEME–PG, and SEME + PG. RB uptake is normalized against untreated control cells. Incubation with RB incorporated in SEME–PG showed higher cellular uptake of the active agent.
