title: Calcium ions and the propagation of impulses through the mammalian heart junctional regions.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D004285:Dogs; D006329:Heart Conduction System / Q000187:drug effects* / Q000502:physiology; D066298:In Vitro Techniques; D008564:Membrane Potentials / Q000187:drug effects; D009469:Neuromuscular Junction / Q000187:drug effects*; D010210:Papillary Muscles / Q000187:drug effects; D011817:Rabbits; D009435:Synaptic Transmission / Q000187:drug effects*
chemical_list: D002118:Calcium