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. Author manuscript; available in PMC: 2012 Jul 22.
Published in final edited form as: Int J Pharm. 2009 Apr 5;375(1-2):48–54. doi: 10.1016/j.ijpharm.2009.03.037

Fig. 2.

Fig. 2

Tail-flick latencies expressed as %MPE versus time for mdr1a/b (+/+) mice (WT) and mdr1a/b (−/−) mice (KO) that received single s.c. dose of (A) 0.2 mg/kg or 2 mg/kg 6-desoxymorphine, (B) 50 mg/kg meperidine or C) 3 mg/kg or 60 mg/kg N-phenylbutyl normeperidine. Data are expressed as the mean ± S.E.M (n = 5).