Proceedings: The time course of contraction in heart muscle preparations equilibrated  with strontium.
D000818:Animals; D001001:Anura; D002118:Calcium / Q000378:metabolism; D002415:Cats; D004837:Epinephrine / Q000378:metabolism; D006321:Heart / Q000187:drug effects / Q000502:physiology*; D066298:In Vitro Techniques; D013324:Strontium / Q000494:pharmacology*; D016276:Ventricular Function
D002118:Calcium; D004837:Epinephrine; D013324:Strontium