title: Some experimental difficulties in the use of Vmax as a measure of GNa.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D002415:Cats; D006168:Guinea Pigs; D006329:Heart Conduction System / Q000187:drug effects*; D006352:Heart Ventricles; D008564:Membrane Potentials / Q000187:drug effects; D008954:Models, Biological; D009206:Myocardium / Q000378:metabolism; D011188:Potassium / Q000378:metabolism / Q000494:pharmacology*; D012756:Sheep; D012964:Sodium / Q000378:metabolism; D013045:Species Specificity
chemical_list: D012964:Sodium; D011188:Potassium