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Effect of delphinidin-3-sambubioside (Dp3-Sam) on lipid accumulation in oleic acid-treated HepG2 cells. (a) Lipid accumulation was colorimetrically assayed at 510 nm. (b) Observing the Oil Red O stained cells by a microscope. Scale bar, 50 µm. HepG2 cells were stimulated with oleic acid (0 or 0.2 mM) and treated with different concentrations of DP (100 or 200 µg/ml) for 24 h. Data are reported as the mean ± SEM. * P < 0.05, ** P < 0.01 vs. oleic acid group
