title: Dual effects of amrinone and caffeine on cardiac contractility: positive versus negative inotropy.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000631:Aminopyridines / Q000494:pharmacology*; D000676:Amrinone; D000818:Animals; D002110:Caffeine / Q000494:pharmacology*; D002316:Cardiotonic Agents / Q000494:pharmacology*; D005289:Ferrets; D066298:In Vitro Techniques; D009200:Myocardial Contraction / Q000187:drug effects*; D010210:Papillary Muscles / Q000187:drug effects
chemical_list: D000631:Aminopyridines; D002316:Cardiotonic Agents; D002110:Caffeine; D000676:Amrinone