title: Effect of adenosine on the frequency-force relationship in the isolated dog atrium.
mesh_terms: D000241:Adenosine / Q000494:pharmacology*; D000818:Animals; D004285:Dogs; D004305:Dose-Response Relationship, Drug; D066298:In Vitro Techniques; D009200:Myocardial Contraction / Q000187:drug effects*; D014700:Verapamil / Q000494:pharmacology
chemical_list: D014700:Verapamil; D000241:Adenosine