RT Journal Article SR Electronic T1 Molecular cloning and functional expression of a mu-opioid receptor from rat brain. JF Molecular Pharmacology JO Mol Pharmacol FD American Society for Pharmacology and Experimental Therapeutics SP 8 OP 12 VO 44 IS 1 A1 Y Chen A1 A Mestek A1 J Liu A1 J A Hurley A1 L Yu YR 1993 UL http://molpharm.aspetjournals.org/content/44/1/8.abstract AB Markup server — Error Error There was a problem handling your request. Please try again in a few minutes, or contact us if you continue to experience this problem.