This study was conducted to demonstrate the preventive graviola effect on breast cancer induced by 7,12-dimethylbenz [a] anthracene (DMBA) in fifty female rats distributed into four groups.Group I: Control group injected orally by physiological saline, group II: DMBA induced-breast cancer, injected orally a single dose of DMBA (50mg/kg) diluted in sesame oil (1 ml), group III: Graviola 200 mg/kg t...