title: Characterization of two types of inotropic actions on the heart "in vivo".
mesh_terms: D000818:Animals; D002122:Calcium Chloride / Q000494:pharmacology; D003250:Constriction; D003331:Coronary Vessels / Q000502:physiology; D004285:Dogs; D004558:Electric Stimulation; D004562:Electrocardiography; D006321:Heart / Q000187:drug effects / Q000502:physiology*; D006339:Heart Rate / Q000187:drug effects; D006706:Homeostasis; D009119:Muscle Contraction; D009638:Norepinephrine / Q000494:pharmacology; D011651:Pulmonary Artery; D012039:Regional Blood Flow; D013328:Strophanthins / Q000494:pharmacology
chemical_list: D013328:Strophanthins; D002122:Calcium Chloride; D009638:Norepinephrine