title: Bronchoconstriction and gas mixing in canine and pig lungs.
mesh_terms: D000403:Airway Resistance / Q000187:drug effects; D000818:Animals; D001982:Bronchial Diseases / Q000503:physiopathology*; D003251:Constriction, Pathologic / Q000139:chemically induced / Q000503:physiopathology; D004285:Dogs / Q000502:physiology*; D005652:Functional Residual Capacity; D005740:Gases; D006371:Helium; D008168:Lung / Q000502:physiology*; D016210:Methacholine Chloride; D008688:Methacholine Compounds / Q000494:pharmacology; D012119:Respiration; D013459:Sulfur Hexafluoride; D013552:Swine / Q000502:physiology*
chemical_list: D005740:Gases; D008688:Methacholine Compounds; D016210:Methacholine Chloride; D006371:Helium; D013459:Sulfur Hexafluoride