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Cytotoxic effects of the MTX and LY on MCF7 cells
The MCF7 cells were treated with different concentrations of MTX (A) and LY (B). After 48 hr and 72 hr of exposure, the cell proliferation was determined using MTT assay. Each experiment was repeated at least three times in quadruplicates for each concentration and the results were expressed as mean±SD. *denotes P<0.001 for significant difference between treatments in comparison to control RPMI
