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Cell viability measured with the alamarBlue® assay in BHK-21, HEK293FT, HeLa, and CHO-K1 cells. At 72 h after transfection, cells were induced with 100 μM CuSO4 and the viability was measured. Error bars indicate standard deviation. ∗P < 0.05 between CHO-K1 and HeLa cells (ANOVA followed by Tukey’s post hoc test).
