title: Letter: Immunosurveillance of naturally occurring feline leukemia.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral; D002371:Cat Diseases / Q000276:immunology*; D002415:Cats; D007938:Leukemia / Q000276:immunology / Q000662:veterinary*; D005256:Leukemia Virus, Feline / Q000276:immunology
chemical_list: D000914:Antibodies, Viral