title: The nature of opiate receptors in toad brain.
mesh_terms: D000818:Animals; D001575:Benzomorphans / Q000494:pharmacology; D001665:Binding Sites; D001923:Brain Chemistry; D002024:Bufo marinus; D051381:Rats; D011957:Receptors, Opioid / Q000032:analysis*; D017473:Receptors, Opioid, kappa; D017480:Receptors, sigma
chemical_list: D001575:Benzomorphans; D011957:Receptors, Opioid; D017473:Receptors, Opioid, kappa; D017480:Receptors, sigma