title: Hypersensitivity pneumonitis. II. A discussion of bird breeder's lung.
mesh_terms: D000818:Animals; D000941:Antigens; D001717:Birds; D006801:Humans; D006967:Hypersensitivity / Q000209:etiology*; D008171:Lung Diseases / Q000276:immunology*
chemical_list: D000941:Antigens