title: Spontaneous liver tumors in laboratory rats.
mesh_terms: D000818:Animals; D000830:Animals, Laboratory; D005260:Female; D008113:Liver Neoplasms / Q000209:etiology / Q000662:veterinary*; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D012376:Rodent Diseases / Q000209:etiology*