Cytotoxic effects of DHMEQ in T24 and T24PR cells. Cells were incubated for 48 hours with various concentrations of DHMEQ. Cell viability was measured by WST-1 assay. Each value represents the mean of at least 3 individual experiments; bars ± SE. *, **p < 0.05 as compared to T24 control and T24PR control, respectively.