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Histology examination of NAFL/ATRA treated skin. Mice were treated with ATRA, NAFL, ATRA/NAFL, respectively. Then the ATRA-treated site was covered with Tegaderm film (3 M) for 4 h. (A) Photos were taken at indicated time points, and representative photos are shown with four mice in each group. Scale bar, 0.5 cm. (B) Representative hematoxylin and eosin-stained sections of the inoculation site 24 h post-treatment. Scale bar, 200 μm.
