title: The mechanism of potentiation of inotropic responses to phenylephrine by theophylline.
mesh_terms: D000818:Animals; D001001:Anura; D004357:Drug Synergism; D006321:Heart / Q000187:drug effects*; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects; D009206:Myocardium / Q000201:enzymology; D010656:Phenylephrine / Q000494:pharmacology*; D010744:Phosphoric Monoester Hydrolases / Q000378:metabolism; D013806:Theophylline / Q000494:pharmacology*
chemical_list: D010656:Phenylephrine; D013806:Theophylline; D010744:Phosphoric Monoester Hydrolases