%0 Journal Article %A Charles Chavkin %A Jay P. McLaughlin %A Jeremy P. Celver %T Regulation of Opioid Receptor Function by Chronic Agonist Exposure: Constitutive Activity and Desensitization %D 2001 %R 10.1124/mol.60.1.20 %J Molecular Pharmacology %P 20-25 %V 60 %N 1 %U https://molpharm.aspetjournals.org/content/molpharm/60/1/20.full.pdf