@misc{indiciaec07338f499d8,
  title = {Chimeric opioid peptides: tools for identifying opioid receptor types.},
  author = {G X Xie and A Miyajima and T Yokota and K Arai and A Goldstein},
  year = {1990},
  doi = {10.1073/pnas.87.8.3180},
  url = {https://pubmed.ncbi.nlm.nih.gov/2158105/},
  note = {Source identifier: 2158105}
}