Treppe and total calcium content of the frog ventricle.
D000818:Animals; D001001:Anura; D002118:Calcium / Q000032:analysis / Q000378:metabolism*; D006321:Heart / Q000502:physiology*; D006352:Heart Ventricles; D066298:In Vitro Techniques; D009119:Muscle Contraction; D009206:Myocardium / Q000032:analysis
D002118:Calcium