title: Developmental changes in constriction of the ductus arteriosus: responses to oxygen and vasoactive agents in the isolated ductus arteriosus of the fetal lamb.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology*; D000818:Animals; D001920:Bradykinin / Q000494:pharmacology*; D004357:Drug Synergism; D004373:Ductus Arteriosus / Q000187:drug effects* / Q000502:physiology; D005260:Female; D005333:Fetus / Q000187:drug effects; D005865:Gestational Age; D010100:Oxygen / Q000494:pharmacology*; D010313:Partial Pressure; D011247:Pregnancy; D012756:Sheep / Q000196:embryology
chemical_list: D000109:Acetylcholine; D010100:Oxygen; D001920:Bradykinin