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PEITC reduces cell viability in MDA-MB-231/IR cells by increasing ROS levels. (a) Cell viability was assessed by the MTT assay. (b) ROS levels were analyzed after staining with H2DCFDA. (c) Total GSH levels were measured by a GSH assay. (d) Pre-treatment with NAC (10 mM) helped maintain the viability of MDA-MB-231/IR cells, as assessed by the MTT assay; * p < 0.05; results are presented as mean ± standard deviation.
