title: Comparative beta adrenoreceptor blocking effect of propranolol and penbutalol. Preliminary observations.
mesh_terms: D000319:Adrenergic beta-Antagonists; D000328:Adult; D003327:Coronary Disease / Q000188:drug therapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D010394:Penbutolol / Q000494:pharmacology*; D011412:Propanolamines / Q000494:pharmacology*; D011433:Propranolol / Q000494:pharmacology
chemical_list: D000319:Adrenergic beta-Antagonists; D011412:Propanolamines; D010394:Penbutolol; D011433:Propranolol