title: Catecholamine-containing cells of the guinea pig heart: an ultrastructural study.
mesh_terms: D000818:Animals; D002395:Catecholamines / Q000032:analysis*; D003326:Coronary Circulation; D006168:Guinea Pigs; D006321:Heart / Q000294:innervation; D006346:Heart Septum / Q000166:cytology*; D006651:Histocytochemistry; D008833:Microcirculation / Q000166:cytology; D008854:Microscopy, Electron; D009206:Myocardium / Q000166:cytology*; D009411:Nerve Endings; D009454:Neurofibrils; D013569:Synapses / Q000166:cytology
chemical_list: D002395:Catecholamines