[Role of sodium ions in regulating myocardial contractility].
D000818:Animals; D001001:Anura; D004558:Electric Stimulation; D006321:Heart / Q000187:drug effects*; D006352:Heart Ventricles / Q000187:drug effects; D007038:Hypotonic Solutions; D066298:In Vitro Techniques; D012964:Sodium / Q000494:pharmacology*
D007038:Hypotonic Solutions; D012964:Sodium
Rol' ionov natriia v reguliatsii sokratitel'noĭ aktivnosti miokarda.