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Stereological evaluation of the viability of HDFs treated with UA, UVB-irradiated, and UA+UVB-irradiated cells. Values are given as mean ± SD of three experiments in each group; statistical analysis was performed by one-way ANOVA followed by DMRT at P < 0.05, P < 0.01, and P < 0.001 compared to the nonirradiated control. P values not sharing a common marking (∗, ∗∗, and ∗∗∗) differ significantly (DMRT).
