EnkephalinsEnkephalin, Ala(2)-MePhe(4)-Gly(5)-Enkephalin, LeucineReceptors, Formyl PeptideEnkephalin, MethionineEnkephalin, D-Penicillamine (2,5)-Receptors, PeptideEnkephalin, Leucine-2-AlaninePeptidesReceptors, Atrial Natriuretic FactorReceptors, OpioidEndorphinsReceptors, Opioid, muReceptors, BombesinReceptors, Vasoactive Intestinal PeptideReceptors, Opioid, deltaReceptors, Neurokinin-3Receptors, Calcitonin Gene-Related PeptideNeurokinin BPeptide FragmentsNaloxoneReceptors, LipoxinReceptors, TachykininReceptors, Opioid, kappaOligopeptidesEthylketocyclazocinePurinergic P1 Receptor AgonistsTachykininsNatriuretic Peptide, C-TypeSubstance PCyclazocineDose-Response Relationship, DrugSerotonin Receptor AgonistsBombesinGuanylate CyclaseDopamine AgonistsAmino Acid SequenceAtrial Natriuretic FactorN-Formylmethionine Leucyl-PhenylalanineD-Ala(2),MePhe(4),Met(0)-ol-enkephalinNarcotic AntagonistsNeurokinin AGastrin-Releasing PeptideOpioid PeptidesSerotonin 5-HT1 Receptor AgonistsMolecular Sequence DataReceptors, Neurokinin-2MorphineSerotonin 5-HT2 Receptor AgonistsRats, Sprague-DawleyAdenosine A1 Receptor AgonistsVasoactive Intestinal PeptideDynorphinsPeptides, CyclicAnalgesics, OpioidRadioligand AssayGuinea PigsPeptide LibraryBinding, CompetitiveKineticsBenzeneacetamidesAnnexin A1GABA AgonistsNaltrexoneAdenosine A2 Receptor AgonistsPiperidinesReceptors, ImmunologicGABA-A Receptor AgonistsCalcitonin Gene-Related PeptideCell LineCells, CulturedGABA-B Receptor AgonistsBenzomorphansStructure-Activity RelationshipCannabinoid Receptor AgonistsProtein BindingSerotonin 5-HT4 Receptor AgonistsAntimicrobial Cationic PeptidesBinding SitesReceptors, Vasoactive Intestinal Peptide, Type IICyclic AMPReceptors, Neurokinin-1Purinergic P2 Receptor AgonistsRats, WistarRNA, Transfer, GlySignal TransductionReceptors, Gastrointestinal HormoneReceptors, Vasoactive Intestinal Polypeptide, Type ILigandsGTP-Binding ProteinsAdrenergic alpha-2 Receptor AgonistsModels, MolecularPyrrolidinesRNA, MessengerNarcoticsGuanosine 5'-O-(3-Thiotriphosphate)Calciumbeta-EndorphinNatriuretic PeptidesReceptors, G-Protein-Coupled