TY  - RPRT
TI  - Evidence for two separate opiate peptide neuronal systems.
AU  - S J Watson
AU  - H Akil
AU  - C W Richard
AU  - J D Barchas
PY  - 1978
DO  - 10.1038/275226a0
UR  - https://pubmed.ncbi.nlm.nih.gov/211426/
ID  - 211426
ER  -