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Permeation profile for eight investigated molecules (BSA, aspirin, galantamine, caffeine, HC-HS, HC, insulin, selegiline) using porcine skin and Franz diffusion cells. The skin temperature was maintained at 32 °C ± 1 during the 24 h. Each point represents the mean cumulative amount in μg ± standard error expressed for the investigated dosage form (n = 9).
