Figure 1: Evaluation of cytotoxic effect of C.cerastes and V.lebetina snake venoms to MCF-7 cells using MTT assay based on the amount of active lactate dehydrogenase released from residual viable cells showing statistically significant cytotoxic effect of test venoms relatively to time and concentrations at P < 0.05. Error bars represent mean ± SD of 3 independent experiments.