title: The problem of adrenergic innervation of the ductus arteriosus in the guinea-pig foetus and its role in the mechanism of constriction.
mesh_terms: D000818:Animals; D002395:Catecholamines / Q000032:analysis; D003250:Constriction; D004373:Ductus Arteriosus / Q000294:innervation* / Q000502:physiology*; D005260:Female; D005333:Fetus; D006168:Guinea Pigs; D006651:Histocytochemistry; D008856:Microscopy, Fluorescence; D009411:Nerve Endings / Q000032:analysis; D011247:Pregnancy; D012110:Reserpine / Q000494:pharmacology; D014666:Vasomotor System / Q000033:anatomy & histology / Q000502:physiology*
chemical_list: D002395:Catecholamines; D012110:Reserpine