TY  - RPRT
TI  - Opioid peptides.
AU  - J Hughes
AU  - H W Kosterlitz
PY  - 1977
DO  - 10.1093/oxfordjournals.bmb.a071416
UR  - https://pubmed.ncbi.nlm.nih.gov/193604/
ID  - 193604
ER  -