Proceedings: Inability of propranolol to change the effects of theophylline on myocardial mechanics.
D000818:Animals; D002415:Cats; D009200:Myocardial Contraction / Q000187:drug effects*; D010210:Papillary Muscles / Q000187:drug effects; D011433:Propranolol / Q000494:pharmacology*; D013806:Theophylline / Q000494:pharmacology*
D011433:Propranolol; D013806:Theophylline