title: Effects of various levels of ammonia on Marek's disease in young chickens.
mesh_terms: D000641:Ammonia / Q000008:administration & dosage / Q000633:toxicity*; D000818:Animals; D002645:Chickens; D004781:Environmental Exposure; D005374:Filtration; D006799:Housing, Animal; D007279:Injections, Subcutaneous; D008380:Marek Disease / Q000453:epidemiology* / Q000209:etiology / Q000473:pathology; D011201:Poultry Diseases / Q000139:chemically induced; D013312:Stress, Physiological / Q000139:chemically induced / Q000662:veterinary
chemical_list: D000641:Ammonia