title: Effects of modifications of the extracellular potassium concentration on excitation-contraction coupling in frog atrial fibres [proceedings].
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D006321:Heart / Q000187:drug effects*; D006325:Heart Atria / Q000187:drug effects; D066298:In Vitro Techniques; D008564:Membrane Potentials / Q000187:drug effects*; D009200:Myocardial Contraction / Q000187:drug effects; D011188:Potassium / Q000494:pharmacology*
chemical_list: D011188:Potassium