title: The influence of calcium utilization on cardiac cyclic AMP.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism*; D000242:Cyclic AMP / Q000032:analysis*; D005260:Female; D005711:Gallopamil / Q000494:pharmacology; D006168:Guinea Pigs; D007545:Isoproterenol / Q000494:pharmacology; D008297:Male; D009200:Myocardial Contraction / Q000187:drug effects; D009206:Myocardium / Q000032:analysis*
chemical_list: D005711:Gallopamil; D000242:Cyclic AMP; D007545:Isoproterenol; D002118:Calcium