PT - JOURNAL ARTICLE AU - Shinjae Chung AU - Sigrun Pohl AU - Joanne Zeng AU - Olivier Civelli AU - Rainer K. Reinscheid TI - Endogenous orphanin FQ / nociceptin is involved in the development of morphine tolerance AID - 10.1124/jpet.106.103960 DP - 2006 Apr 04 TA - Journal of Pharmacology and Experimental Therapeutics 4099 - http://jpet.aspetjournals.org/content/early/2006/04/04/jpet.106.103960.short 4100 - http://jpet.aspetjournals.org/content/early/2006/04/04/jpet.106.103960.full