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2. Relationship between the inhibition constant (Ki) and the concentration of inhibitor which causes 50 percent inhibition (IC50) of an enzymatic reaction;Cheng;Biochem. Pharmacol.,1973
3. Subjective effects of narcotic antagonists cyclazocine and nalorphine on the addiction research center inventory (ARCI);Haertzen;Psychopharmacologia,1970
4. Preparation of brain membranes containing a single type of opioid receptor highly selective for dynorphin;James,1982
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