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The cytotoxicity of DHA was assessed by MTT assay after cells (a-HepG2, b-7402, c-LM3, d-ECV304) were treated with DHA at a serial doses as indicated for 48 h. Means ± SD (n = 6) are shown. Similar results were obtained in two independent experiments. # not significant, ** P < 0.01, *** P < 0.001.
