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Photomicrographs (×200 magnification) of (a) the histological section of porcine ear skin contacted with only saline solution (0.9% NaCl, w/w) and (b) the histological section of the porcine ear skin after transdermal permeation of curcumin using CG-DES at 2.0% (w/v). All sections were stained with hematoxylin and eosin. For the legend of inserted (thick, thin, and skinny) arrows, please refer to the Discussion section.
