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Cell viability determined by the SRB assay (48 h) in ER(+) breast cancer cells: T47D (A) and MCF7 (B), treated with 1, 2 and cis-platin (black dashed line) at concentrations: 12.5, 25, 50, 100 and 150 μM (left) and 3 at the concentrations: 0.25, 1, 4, 12.5, 25 μM (right). All values are expressed as means (from three independent experiments) ± SD relative the carrier.
