Pathology of old age in experimental animals with reference to viral diseases.
D000367:Age Factors; D000818:Animals; D000830:Animals, Laboratory; D007674:Kidney Diseases / Q000662:veterinary; D051379:Mice; D009369:Neoplasms / Q000662:veterinary*; D051381:Rats; D013966:Thyroiditis / Q000662:veterinary; D014777:Virus Diseases / Q000662:veterinary*