title: Neurotransmitter and cyclic nucleotide modulation of frog cardiac contractility.
mesh_terms: D012368:4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinone / Q000494:pharmacology; D000818:Animals; D001001:Anura; D001285:Atropine / Q000494:pharmacology; D002217:Carbachol / Q000494:pharmacology*; D000242:Cyclic AMP / Q000378:metabolism*; D006152:Cyclic GMP / Q000378:metabolism*; D004837:Epinephrine / Q000494:pharmacology*; D006321:Heart / Q000187:drug effects; D009200:Myocardial Contraction / Q000187:drug effects; D009206:Myocardium / Q000378:metabolism*; D011894:Rana pipiens; D013806:Theophylline / Q000494:pharmacology
chemical_list: D012368:4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinone; D001285:Atropine; D002217:Carbachol; D013806:Theophylline; D000242:Cyclic AMP; D006152:Cyclic GMP; D004837:Epinephrine