参考文献:10.1016/0006-291x(85)90646-1 摘要:Kaneko S, Tamura S, Takagi H. Purification and identification of endogenous anti-opioid substances from bovine brain. Biochemical and Biophysical Research Communications. 1985 Jan;126(1):587–93. doi: 10.1016/0006-291x(85)90646-1.