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Lupeol regulates the expression of keratin 16 in epidermal keratinocytes. (A) Western blot showing expression of keratin 16 in keratinocytes after 24-h treatment with lupeol. (B) All the proteins were semi-quantitated using ImageJ software and normalized to the levels of β-actin. Data are expressed as mean ± SEM. ** p < 0.01 and *** p < 0.001 versus control group.
