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Effects of arctiin on the cell viability of HeLa, SiHa and human proximal tubular HK-2 cells. (A) Chemical structure of arctiin. (B) HeLa, (C) SiHa and (D) HK-2 cells were treated with various concentrations (0, 10, 20, 40 and 80 μM) of arctiin for 24 h before being subjected to an MTT assay for cell viability. The values represented the means ± SD of at least 3 independent experiments.
