Research ArticleNEUROPHARMACOLOGY
Activation of G-Proteins by Morphine and Codeine Congeners: Insights to the Relevance of O- and N-Demethylated Metabolites at μ- and δ-Opioid Receptors
Chad M. Thompson, Heidi Wojno, Elisabeth Greiner, Everette L. May, Kenner C. Rice and Dana E. Selley
Journal of Pharmacology and Experimental Therapeutics February 2004, 308 (2) 547-554; DOI: https://doi.org/10.1124/jpet.103.058602