RT Journal Article SR Electronic T1 Further studies on the enhanced affinity of opioid receptors for naloxone in morphine-dependent mice. JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 456 OP 461 VO 209 IS 3 A1 T Kitano A1 A E Takemori YR 1979 UL http://jpet.aspetjournals.org/content/209/3/456.abstract AB