Figure 3. Effect of bevacizumab, following 24 h exposure, did not reveal evidence of cytotoxicity at any of the doses tested. Hydrogen peroxide (1 mM) served as a positive control. Cell numbers were assessed using Water Soluble Tetrazolium (WST)-1 (A) and crystal violet assays (B), and are expressed as percent of the control (*p- value<0.001). Bev: Bevacizumab. Error bars are SEM n=8 for all experiments.