title: Influence of sodium ions on the regulation of frog myocardial contractility.
mesh_terms: D000818:Animals; D001001:Anura; D002118:Calcium / Q000494:pharmacology; D002712:Chlorides / Q000494:pharmacology; D005110:Extracellular Space; D006321:Heart / Q000187:drug effects*; D008094:Lithium / Q000494:pharmacology; D008564:Membrane Potentials; D009119:Muscle Contraction / Q000187:drug effects; D010042:Ouabain / Q000494:pharmacology; D012964:Sodium / Q000494:pharmacology*; D012965:Sodium Chloride / Q000494:pharmacology; D013395:Sucrose / Q000494:pharmacology
chemical_list: D002712:Chlorides; D012965:Sodium Chloride; D013395:Sucrose; D010042:Ouabain; D008094:Lithium; D012964:Sodium; D002118:Calcium