title: Frog heart intracellular potassium activities measured with potassium microelectrodes.
mesh_terms: D000818:Animals; D001001:Anura; D006325:Heart Atria; D006352:Heart Ventricles; D008839:Microelectrodes; D009206:Myocardium / Q000378:metabolism*; D011188:Potassium / Q000378:metabolism*; D011894:Rana pipiens
chemical_list: D011188:Potassium