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Exogenous SOD1 or catalase has no effect on the cytotoxicity induced by curcumin (CC) plus trolox. One unit of SOD1 (A) or catalase (B) was added to A2780 cells prior to addition of curcumin and trolox at indicated concentrations. Cell viability was analyzed by the MTS assay. Data (mean ± SE, n=3) are expressed as percentages of the MTS level detected in untreated control cells.
