title: Evidence of presence of automatic fibers in the canine atrioventricular node.
mesh_terms: D000200:Action Potentials; D000818:Animals; D004285:Dogs; D004558:Electric Stimulation; D004594:Electrophysiology; D006329:Heart Conduction System / Q000033:anatomy & histology / Q000502:physiology*; D066298:In Vitro Techniques; D008564:Membrane Potentials; D008839:Microelectrodes; D009474:Neurons / Q000502:physiology*