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Effect of USHE on the activation of the Nrf2/HO-1 signaling pathway. Western blot analysis of (A) cytosolic HO-1, NQO1, and (B) nuclear translocated Nrf2 protein expression in UVB-exposed HaCaT keratinocytes. Values are expressed as the mean ± SE from triplicate experiments. Bars with different letters within the same graph represent significant differences (p < 0.05).
