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. Author manuscript; available in PMC: 2008 Mar 5.
Published in final edited form as: Biochem Pharmacol. 2005 Jun 15;69(12):1869–1878. doi: 10.1016/j.bcp.2005.03.030

Fig. 1.

Fig. 1

The effect of methadone (20–200 μM) on the activity of the vanadate-sensitive ATPase coupled to P-gp and expressed in a membrane preparation. The ATPase activity increased in a linear fashion with the concentration of methadone.