title: The design of antagonists of regulatory peptides, and comments on their specificity.
mesh_terms: D000818:Animals; D006801:Humans; D008961:Models, Structural; D009479:Neuropeptides / Q000037:antagonists & inhibitors* / Q000494:pharmacology; D011957:Receptors, Opioid / Q000187:drug effects / Q000502:physiology*; D017465:Receptors, Opioid, delta
chemical_list: D009479:Neuropeptides; D011957:Receptors, Opioid; D017465:Receptors, Opioid, delta