title: Effects of glucagon, prostaglandin E 1  and dibutyryl cyclic 3',5'-AMP upon the transmembrane action potential of guinea pig ventricular fiber and myocardial contractile force.
mesh_terms: D000200:Action Potentials / Q000187:drug effects*; D000319:Adrenergic beta-Antagonists / Q000494:pharmacology; D000818:Animals; D001794:Blood Pressure / Q000187:drug effects; D000242:Cyclic AMP / Q000494:pharmacology*; D004558:Electric Stimulation; D005934:Glucagon / Q000494:pharmacology*; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects* / Q000502:physiology; D006352:Heart Ventricles / Q000187:drug effects; D066298:In Vitro Techniques; D008564:Membrane Potentials / Q000187:drug effects; D009119:Muscle Contraction / Q000187:drug effects*; D010477:Perfusion; D011453:Prostaglandins / Q000494:pharmacology*
chemical_list: D000319:Adrenergic beta-Antagonists; D011453:Prostaglandins; D005934:Glucagon; D000242:Cyclic AMP