title: Lack of adrenergic nerves in the circular smooth muscles of ductus arteriosus persistens.
mesh_terms: D002395:Catecholamines / Q000032:analysis; D002675:Child, Preschool; D004373:Ductus Arteriosus / Q000294:innervation*; D004374:Ductus Arteriosus, Patent / Q000209:etiology / Q000601:surgery; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008856:Microscopy, Fluorescence; D009130:Muscle, Smooth / Q000294:innervation*; D009411:Nerve Endings; D014666:Vasomotor System
chemical_list: D002395:Catecholamines