RT Journal Article SR Electronic T1 Activation of G-Proteins by Morphine and 3- Methoxymorphine Congeners: Insights to the Relevance of O- and N-Demethylated Metabolites at µ and δ Opioid Receptors JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics DO 10.1124/jpet.103.058602 A1 Chad M. Thompson A1 Heidi Wojno A1 Elizabeth Greiner A1 Everette L. May A1 Kenner C. Rice A1 Dana E. Selley YR 2003 UL http://jpet.aspetjournals.org/content/early/2003/11/04/jpet.103.058602.abstract AB