title: Role of viruses in the etiology of naturally occurring feline leukemia.
mesh_terms: D000818:Animals; D000956:Antigens, Viral / Q000032:analysis; D002371:Cat Diseases / Q000209:etiology*; D002415:Cats; D002472:Cell Transformation, Viral; D003429:Cross Reactions; D007938:Leukemia / Q000209:etiology / Q000662:veterinary*; D005256:Leukemia Virus, Feline / Q000276:immunology; D005253:Sarcoma Viruses, Feline / Q000276:immunology; D014412:Tumor Virus Infections; D014764:Viral Proteins / Q000276:immunology
chemical_list: D000956:Antigens, Viral; D014764:Viral Proteins