Anatagonist potency and receptor binding.
D000818:Animals; D001667:Binding, Competitive; D001921:Brain / Q000378:metabolism*; D006168:Guinea Pigs; D007082:Ileum / Q000378:metabolism; D066298:In Vitro Techniques; D009022:Morphine Derivatives / Q000037:antagonists & inhibitors; D009292:Narcotic Antagonists / Q000378:metabolism*; D051381:Rats; D011955:Receptors, Drug; D013329:Structure-Activity Relationship
D009022:Morphine Derivatives; D009292:Narcotic Antagonists; D011955:Receptors, Drug