Aspects of lower respiratory tract disease in the horse.
D000818:Animals; D006734:Horse Diseases / Q000209:etiology / Q000628:therapy*; D006736:Horses; D008173:Lung Diseases, Obstructive / Q000662:veterinary; D012140:Respiratory Tract Diseases / Q000209:etiology / Q000628:therapy / Q000662:veterinary*