Ultimobranchial adenoma of the thyroid gland in a horse.
D000236:Adenoma / Q000648:ultrastructure / Q000662:veterinary*; D000818:Animals; D006734:Horse Diseases / Q000473:pathology*; D006736:Horses; D008297:Male; D013964:Thyroid Neoplasms / Q000648:ultrastructure / Q000662:veterinary*