title: Periodontal disease in sheep. 1. Review of the literature.
mesh_terms: D000818:Animals; D009520:New Zealand; D010510:Periodontal Diseases / Q000209:etiology / Q000235:genetics / Q000517:prevention & control / Q000662:veterinary*; D010518:Periodontitis; D012756:Sheep; D012757:Sheep Diseases