RT Journal Article SR Electronic T1 Selectivity and steric effects of metoprolol isomers on isolated rabbit atria, arteries and tracheal muscles. JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 311 OP 319 VO 207 IS 2 A1 Toda, N A1 Hayashi, S A1 Hatano, Y A1 Okunishi, H A1 Miyazaki, M YR 1978 UL http://jpet.aspetjournals.org/content/207/2/311.abstract AB