Kosterlitz, H W Assessment of the agonist and antagonist properties of narcotic analgesic drugs by their actions on the morphine receptor in the guinea pig ileum. [electronic resource] - Advances in biochemical psychopharmacology 1973 - 319-34 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0065-2229 Subjects--Topical Terms: Analgesics--pharmacologyAnimalsBinding, CompetitiveBiological AssayChemical PhenomenaChemistryDose-Response Relationship, DrugElectric StimulationGuinea PigsHalf-LifeHaplorhiniIleum--drug effectsIn Vitro TechniquesMorphinans--pharmacologyMorphine--antagonists & inhibitorsMuscle Contraction--drug effectsMuscle, Smooth--drug effectsNalorphine--pharmacologyNaloxone--pharmacologyNarcotic Antagonists--metabolismReceptors, Drug--drug effectsSpecies SpecificityTachyphylaxis--drug effectsTime Factors