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The effect of AST on epidermal thickness in the dorsal skin of ultraviolet (UV)-induced mice. (A) Hematoxylin and eosin staining. Scale bar = 50 μm (B) Treatment with AST significantly suppressed the UV irradiation-induced increase in epidermal thickness. * p < 0.01 vs. control mice; # p < 0.01 vs. UV-induced mice.
