Antagonism of isoprenaline or histamine induced positive chronotropic and inotropic effects by alprenolol.
D000526:Alprenolol / Q000494:pharmacology*; D000818:Animals; D004336:Drug Antagonism; D005260:Female; D006325:Heart Atria / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects*; D006633:Histamine Antagonists / Q000494:pharmacology; D007545:Isoproterenol / Q000037:antagonists & inhibitors*; D008297:Male; D009200:Myocardial Contraction / Q000187:drug effects*; D011817:Rabbits
D006633:Histamine Antagonists; D000526:Alprenolol; D007545:Isoproterenol