title: Endocardial recording of monophasic action potentials in the intact dog.
mesh_terms: D000200:Action Potentials; D000818:Animals; D001001:Anura; D006328:Cardiac Catheterization / Q000295:instrumentation; D004285:Dogs; D004562:Electrocardiography / Q000295:instrumentation; D004566:Electrodes; D004699:Endocardium / Q000502:physiology; D006321:Heart / Q000502:physiology*; D008722:Methods; D013997:Time Factors