title: The effects of potassium and barium on ventricular automaticity and the pacemaker current.
mesh_terms: D000818:Animals; D001464:Barium / Q000494:pharmacology*; D002415:Cats; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects*; D066298:In Vitro Techniques; D008564:Membrane Potentials / Q000187:drug effects; D010210:Papillary Muscles / Q000187:drug effects / Q000502:physiology; D011188:Potassium / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D001464:Barium; D011188:Potassium