Galangin inhibits UVB- and H2O2-induced proliferation reduction in HS68 cells. (A) Structure of galangin (3,5,7-trihydroxyflavone). (B–D) HS68 cells were treated with galangin, H2O2, and UVB, at the indicated concentrations/intensities for 24 h. (E,F) HS68 cells were exposed to H2O2 (200 μM) or UVB (40 mJ/cm2) and then co-treated with galangin at various concentrations (10–30 μM). The MTT assay was used to determine cell viability. Values shown are means ± SE. Quantification of the results is shown (n = 3) * p < 0.05, *** p < 0.001 vs. control cells; #
p < 0.05, ##
p < 0.01, ###
p < 0.001 vs. H2O2- or UVB-treated cells.