title: Effects of imipramine on frequency-force relationship in isolated right atrial muscle of the dog.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism; D004285:Dogs; D005260:Female; D006339:Heart Rate / Q000187:drug effects*; D007099:Imipramine / Q000494:pharmacology*; D066298:In Vitro Techniques; D008297:Male; D009200:Myocardial Contraction / Q000187:drug effects*; D014700:Verapamil / Q000494:pharmacology
chemical_list: D014700:Verapamil; D007099:Imipramine; D002118:Calcium