title: Contractile behaviour of cardiac ventricular muscle in strontium solution.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D001001:Anura; D002118:Calcium / Q000494:pharmacology; D006352:Heart Ventricles / Q000032:analysis / Q000648:ultrastructure; D066298:In Vitro Techniques; D009200:Myocardial Contraction / Q000187:drug effects*; D009638:Norepinephrine / Q000494:pharmacology; D011188:Potassium / Q000494:pharmacology; D011892:Rana catesbeiana; D013324:Strontium / Q000494:pharmacology*
chemical_list: D011188:Potassium; D002118:Calcium; D009638:Norepinephrine; D013324:Strontium