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Effect of vanillic acid and MNNG on morphological features of rat uterus. Uterus of control and VA alone supplemented rats shows no evidence of tumour (a and c). Uterus of MNNG and MNNG + VA (100 mg/kg b.w.) pre and co-treatment rats show varying degrees of tumours incidence. Rats supplemented with VA (100 mg/kg b.w.) throughout the study period shows no macroscopically evident tumours
