title: Dependence of Ca uptake on the Na gradient in heart muscle [proceedings].
mesh_terms: D000818:Animals; D001001:Anura; D001693:Biological Transport, Active / Q000187:drug effects; D002118:Calcium / Q000378:metabolism*; D006352:Heart Ventricles / Q000187:drug effects / Q000378:metabolism; D006801:Humans; D007700:Kinetics; D009206:Myocardium / Q000378:metabolism*; D012964:Sodium / Q000494:pharmacology*
chemical_list: D012964:Sodium; D002118:Calcium