Figure 3: Levels of VEGF determined in the serum by ELISA. C1= Benzoimidazoquinazoline, C2= Benzimidazotriazine. Values are expressed as mean ± SD. All data were analyzed using ANOVA followed by bonferroni post hoc test. * significantly different compared to the normal group,# significantly different compared to the control group, $ significantly different compared to the cisplatin group. Differences were considered significant at p <0.05.