title: Contraction without depolarization in the in vivo heart. Kinetic and electronmicroscopic studies.
mesh_terms: D000818:Animals; D002118:Calcium / Q000032:analysis; D004285:Dogs; D004558:Electric Stimulation; D004562:Electrocardiography; D006321:Heart / Q000502:physiology*; D006339:Heart Rate; D006651:Histocytochemistry; D008854:Microscopy, Electron; D008931:Mitochondria, Muscle; D009119:Muscle Contraction; D009206:Myocardium / Q000032:analysis / Q000166:cytology; D009210:Myofibrils; D013997:Time Factors
chemical_list: D002118:Calcium