Journal of Pharmacology and Experimental Therapeutics · 1983 · 142 citations · 0 references
MedicineMedicinal ChemistryPharmacologyMolecular PharmacologyNeuropharmacologyStructure-activity RelationshipsAnalgesic PharmacologyDrug-receptor InteractionsLigand BindingOpioid AnalgesicsOpioid PharmacologyReceptor PharmacologyAmino AcidsChemical ModificationChemical Structure-activity RelationshipsMuscle ContractionOpioid Receptor AgonistsOpioid Receptor BindingReceptorsSmooth Muscle Contraction