title: Papaverine enhances the negative inotropic effect of acetylcholine in rat auricles.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology*; D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D006152:Cyclic GMP / Q000502:physiology; D003864:Depression, Chemical; D004357:Drug Synergism; D006325:Heart Atria / Q000187:drug effects; D066298:In Vitro Techniques; D009200:Myocardial Contraction / Q000187:drug effects*; D010208:Papaverine / Q000494:pharmacology*; D051381:Rats
chemical_list: D010208:Papaverine; D006152:Cyclic GMP; D000109:Acetylcholine