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Effect of DHCA on UVB-induced MMP expression (a) and the MAPK signaling pathway (b). L929 cells were treated with 35 μM DHCA for 1 h, irradiated with UVB (600 mJ/cm2), and protein expression was evaluated after 24 h by western blot assay using specific antibodies. Each column represents the mean ± SD (n = 3). ##p < 0.01 and #p < 0.05: significantly different from nonirradiated and nontreated cells (NC); ∗p < 0.05: significantly different from irradiated and nontreated cells (UVB).
