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Effect of LJE on UVB-mediated MAPK signaling in keratinocytes. Keratinocytes were treated with LJE (100 µg/mL) for 48 h prior to UVB irradiation (5 mJ/cm2). Six hours after irradiation, the PKR phosphorylation and MAPK activation were analyzed with (A) Western blots, (B–F) the quantitative results are shown. * p < 0.05, # p < 0.01, compared to basal levels; o p < 0.05, $ p < 0.01, compared between (−) LJE and (+) LJE groups.
