Astrocytoma in the spinal cord of an aged rat.
D000375:Aging; D000818:Animals; D001254:Astrocytoma / Q000473:pathology / Q000662:veterinary*; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D013120:Spinal Cord Neoplasms / Q000473:pathology / Q000662:veterinary*