title: Blockade of the positive inotropic actions of epinephrine and theophylline by acetylcholine.
mesh_terms: D000109:Acetylcholine / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D000227:Adenine Nucleotides / Q000096:biosynthesis; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D002118:Calcium / Q000494:pharmacology; D004336:Drug Antagonism; D004558:Electric Stimulation; D004837:Epinephrine / Q000494:pharmacology*; D006352:Heart Ventricles / Q000187:drug effects; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects*; D011817:Rabbits; D013806:Theophylline / Q000494:pharmacology*; D014426:Turtles
chemical_list: D000227:Adenine Nucleotides; D001285:Atropine; D013806:Theophylline; D000109:Acetylcholine; D002118:Calcium; D004837:Epinephrine