Complex formation between the vasopressin 1b receptor, β-arrestin-2, and the μ-opioid receptor underlies morphine tolerance.
Koshimizu TA, Honda K, Nagaoka-Uozumi S, Ichimura A, Kimura I, Nakaya M, Sakai N, Shibata K, Ushijima K, Fujimura A, Hirasawa A, Kurose H, Tsujimoto G, Tanoue A, Takano Y.