The ionic basis for control of myocardial contractility.
D000818:Animals; D001001:Anura; D002118:Calcium / Q000494:pharmacology*; D004285:Dogs; D006321:Heart / Q000187:drug effects*; D066298:In Vitro Techniques; D007477:Ions / Q000494:pharmacology; D011188:Potassium / Q000494:pharmacology*; D012964:Sodium / Q000494:pharmacology
D007477:Ions; D012964:Sodium; D011188:Potassium; D002118:Calcium