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The cells were treated with varying concentrations of delphinidin (0.01–5 µM/mL) in culture medium for 24 h. The cell viabilities were determined by the 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay. Results are expressed as the percentages of control by means ± SD of eight independent experiments.
