[Influence of beta-receptor stimulation and blocking on the vectorcardiogram].
D000818:Animals; D004285:Dogs; D007275:Injections, Intravenous; D007545:Isoproterenol / Q000494:pharmacology*; D011433:Propranolol / Q000494:pharmacology*; D014672:Vectorcardiography
D011433:Propranolol; D007545:Isoproterenol