Vinylcyclohexene dioxide (VCD) is used to study toxicity as an ovotoxin,and it's also used to understand its mechanisms of toxicity towards ovarian follicles and effects on epithelial differentiation.;Vinylcyclohexene dioxide (VCD) is used to study toxicity as an ovotoxin,and it's also used to understand its mechanisms of toxicity towards ovarian follicles and effects on epithelial differentiation.