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. Author manuscript; available in PMC: 2008 Mar 16.
Published in final edited form as: Neuropharmacology. 2007 Jan 20;52(6):1336–1341. doi: 10.1016/j.neuropharm.2007.01.005

Fig. 1.

Fig. 1

Buprenorphine failed to increase motor activity in mice lacking the MOP. Mice lacking the MOP [MOP (−/−)] and their wild-type littermates [MOP (+/+)] were habituated to motor activity chambers for 1 h, then injected with buprenorphine (3 mg/kg, s.c.) and motor activity recorded for an additional 1 h (4 × 15-min sessions). Data are presented as mean (±S.E.M.) of 6 mice per genotype.