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Evaluation of cell viability by 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide (MTT) assay performed 24, 48 and 72 h after transfection. The viability of untreated cells (control) at each time point was considered as 100% and the viability of the other groups is reported as a percentage of untreated cells at the same time point. Data are presented as mean ± SD of three independent experiments (***p < 0.001)
