title: Biological testing of food grown in the Transkei.
mesh_terms: D000818:Animals; D001652:Bile Ducts / Q000473:pathology; D001681:Biological Assay; D002273:Carcinogens; D004032:Diet / Q000009:adverse effects*; D004935:Esophageal Diseases / Q000209:etiology*; D004938:Esophageal Neoplasms / Q000209:etiology; D005260:Female; D008099:Liver / Q000473:pathology; D008107:Liver Diseases / Q000209:etiology*; D008297:Male; D009026:Mortality; D009369:Neoplasms / Q000209:etiology; D011247:Pregnancy; D011248:Pregnancy Complications; D051381:Rats; D013019:South Africa
chemical_list: D002273:Carcinogens