title: Experimental testing of a permanent rechargeable cardiac pacemaker.
mesh_terms: D000818:Animals; D006328:Cardiac Catheterization; D004285:Dogs; D004562:Electrocardiography; D004567:Electrodes, Implanted; D005069:Evaluation Studies as Topic; D005557:Formaldehyde; D006327:Heart Block / Q000139:chemically induced; D006329:Heart Conduction System / Q000601:surgery; D008722:Methods; D010138:Pacemaker, Artificial / Q000295:instrumentation*
chemical_list: D005557:Formaldehyde