title: Expiratory versus inspiratory efforts in suffocating pigeons.
mesh_terms: D000818:Animals; D001237:Asphyxia / Q000503:physiopathology*; D003061:Codeine / Q000494:pharmacology; D010856:Columbidae / Q000502:physiology*; D003503:Cyclobutanes / Q000494:pharmacology; D005021:Ethylamines / Q000494:pharmacology; D005260:Female; D008297:Male; D009665:Noscapine / Q000494:pharmacology; D010424:Pentobarbital / Q000494:pharmacology; D005082:Physical Exertion; D011312:Pressure; D012119:Respiration / Q000187:drug effects; D013997:Time Factors; D014132:Trachea / Q000503:physiopathology
chemical_list: D003503:Cyclobutanes; D005021:Ethylamines; D009665:Noscapine; D010424:Pentobarbital; D003061:Codeine