Decrease of morphine-CPP by sinomenine via mediation of tyrosine hydroxylase, NMDA receptor subunit 2B and opioid receptor in the zebrafish brain

Yingbo Lin, Hancheng Li, Ju Peng, Chan Li, Chen Zhu, Yuting Zhou, Zhijie Chen, Jing Li, Chaohua Luo, Zhixian Mo