@misc{indiciae0e1b65c4370b,
  title = {Multiple interconvertible affinity states for the delta opioid agonist-receptor complex.},
  author = {J W Spain and C J Coscia},
  year = {1987},
  url = {https://pubmed.ncbi.nlm.nih.gov/3036838/},
  note = {Source identifier: 3036838}
}