title: New aspects of excitation-contraction coupling in cardiac muscle: two types of Ca++ entry promotion with and without involvement of cyclic AMP and Mg++ ions.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D003994:Bucladesine / Q000494:pharmacology; D002118:Calcium / Q000378:metabolism*; D005576:Colforsin / Q000494:pharmacology; D000242:Cyclic AMP / Q000502:physiology*; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects / Q000502:physiology*; D066298:In Vitro Techniques; D007473:Ion Channels / Q000378:metabolism*; D008274:Magnesium / Q000378:metabolism*; D009200:Myocardial Contraction; D009206:Myocardium / Q000378:metabolism*; D009538:Nicotine / Q000494:pharmacology; D014439:Tyramine / Q000494:pharmacology
chemical_list: D007473:Ion Channels; D005576:Colforsin; D003994:Bucladesine; D009538:Nicotine; D000242:Cyclic AMP; D008274:Magnesium; D002118:Calcium; D014439:Tyramine