Chromatography, AffinityHormone AntagonistsDopamine AntagonistsBinding, CompetitiveExcitatory Amino Acid AntagonistsProtein BindingNeurokinin-1 Receptor AntagonistsAntibody AffinityNarcotic AntagonistsAffinity LabelsDose-Response Relationship, DrugKineticsHistamine H2 AntagonistsBinding SitesMolecular Sequence DataInterleukin 1 Receptor Antagonist ProteinMuscarinic AntagonistsAmino Acid SequencePiperidinesRats, Sprague-DawleyGABA AntagonistsHistamine H1 AntagonistsPurinergic P1 Receptor AntagonistsRadioligand AssayLigandsHistamine AntagonistsNicotinic AntagonistsAdrenergic alpha-1 Receptor AntagonistsAdenosine A2 Receptor AntagonistsPurinergic P2 Receptor AntagonistsSerotonin 5-HT3 Receptor AntagonistsSerotonin 5-HT2 Receptor AntagonistsStructure-Activity RelationshipRats, WistarAdenosine A1 Receptor AntagonistsAngiotensin Receptor AntagonistsLeukotriene AntagonistsRecombinant ProteinsModels, MolecularAdrenergic alpha-AntagonistsCell LineAdrenergic alpha-2 Receptor AntagonistsAdrenergic AntagonistsReceptors, SerotoninGABA-A Receptor AntagonistsCells, CulturedCalciumGuinea PigsHistamine H3 AntagonistsCHO CellsPeptide FragmentsCricetinaeReceptors, EndothelinBase SequencePyridinesOligopeptidesAdrenergic beta-2 Receptor AntagonistsReceptors, N-Methyl-D-AspartatePeptidesRabbitsCalcium Channel BlockersProtein ConformationProtein Structure, TertiarySerotonin 5-HT1 Receptor AntagonistsPiperazinesAdenosine A3 Receptor AntagonistsDizocilpine MaleateBenzazepinesSerotonin Receptor AgonistsPeptides, CyclicDrug InteractionsBiphenyl CompoundsIndolesEstrogen AntagonistsXanthinesNaltrexoneCell MembranePrazosinReceptor, Endothelin AReceptors, OpioidCarrier ProteinsMutagenesis, Site-DirectedNaloxoneSerotoninReceptors, Dopamine D2DioxanesSurface Plasmon ResonanceSubstance PPyrrolidinesReceptors, Cell SurfaceAdrenergic beta-AntagonistsReceptors, MuscarinicAdenosineNeuronsSulfonamidesAzepinesReceptors, CholecystokininMutationPurinergic AntagonistsReceptors, Opioid, mu