title: A steric theory of opioid agonists, antagonists, agonist-antagonists, and partial agonists.
mesh_terms: D000818:Animals; D001667:Binding, Competitive / Q000187:drug effects; D001921:Brain / Q000187:drug effects* / Q000378:metabolism; D006801:Humans; D009292:Narcotic Antagonists / Q000378:metabolism / Q000494:pharmacology*; D009294:Narcotics / Q000378:metabolism / Q000494:pharmacology*; D011957:Receptors, Opioid / Q000187:drug effects* / Q000378:metabolism; D017473:Receptors, Opioid, kappa; D017450:Receptors, Opioid, mu; D013237:Stereoisomerism
chemical_list: D009292:Narcotic Antagonists; D009294:Narcotics; D011957:Receptors, Opioid; D017473:Receptors, Opioid, kappa; D017450:Receptors, Opioid, mu