Sarcocystis species in sheep.
D000818:Animals; D002415:Cats; D004285:Dogs; D009132:Muscles / Q000469:parasitology*; D012522:Sarcocystis; D012523:Sarcocystosis / Q000469:parasitology / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000469:parasitology*