title: Calcium and calcium slow channel antagonists on cyclic nucleotide levels in the isolated rat heart.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism*; D000242:Cyclic AMP / Q000378:metabolism*; D006152:Cyclic GMP / Q000378:metabolism*; D004558:Electric Stimulation; D007473:Ion Channels / Q000187:drug effects* / Q000378:metabolism; D008345:Manganese / Q000494:pharmacology; D009200:Myocardial Contraction / Q000187:drug effects; D009206:Myocardium / Q000378:metabolism*; D009543:Nifedipine / Q000494:pharmacology; D051381:Rats; D014700:Verapamil / Q000494:pharmacology
chemical_list: D007473:Ion Channels; D008345:Manganese; D014700:Verapamil; D000242:Cyclic AMP; D006152:Cyclic GMP; D009543:Nifedipine; D002118:Calcium