Drug Partial AgonismDrug Inverse AgonismDrug AgonismPharmacological ProcessesHistamine AgonistsLigandsSerotonin Receptor AgonistsOxyntomodulinReceptor, Serotonin, 5-HT2BBetahistineReceptors, G-Protein-CoupledSerotonin 5-HT1 Receptor AgonistsSerotonin 5-HT2 Receptor AgonistsPergolideReceptors, GlucagonCHO CellsReceptors, Histamine H3Radioligand AssayCricetulusSerotonin 5-HT1 Receptor AntagonistsDose-Response Relationship, DrugCyclazocineReceptor, Serotonin, 5-HT2AHistamine AntagonistsBurimamidePiperidinesNutritive SweetenersCricetinaeEthylketocyclazocineErgolinesStructure-Activity RelationshipReceptors, Dopamine D2ArrestinsSecosteroidsAdrenergic AgonistsHistamine H3 AntagonistsReceptors, GhrelinAdenosine A1 Receptor AgonistsGuanosine 5'-O-(3-Thiotriphosphate)Drug AntagonismReceptors, Opioid, deltaReceptors, Opioid, muSerotonin AntagonistsPPAR deltaCOS CellsReceptor, Serotonin, 5-HT2CPyrazolesAdrenergic alpha-1 Receptor AntagonistsAdrenergic alpha-1 Receptor AgonistsCycloserineReceptors, SerotoninReceptor, Cannabinoid, CB1Narcotic AntagonistsAdrenergic beta-AgonistsReceptors, Adrenergic, beta-2Binding, CompetitiveGABA-A Receptor AgonistsDopamine AgonistsAnti-Obesity AgentsSerotonin 5-HT2 Receptor AntagonistsMethylhistaminesAdrenergic beta-2 Receptor AgonistsReceptors, CannabinoidCannabinoidsAllosteric SiteReceptor, Adenosine A1ImidazolesPPAR gammaAllosteric RegulationReceptors, OpioidHEK293 CellsProtein BindingSignal TransductionPiperazinesReceptors, Adrenergic, alpha-1Adenosine A2 Receptor AgonistsCannabidiolReceptor, Cannabinoid, CB2Drug DesignPhenoxybenzaminePhenethylaminesModels, MolecularThiophenesGuinea PigsBenzylaminesCyclic AMPExcitatory Amino Acid AgentsInositol PhosphatesQuinuclidinesAlkanesulfonatesAntipsychotic AgentsRats, Sprague-DawleyIleumAdrenergic beta-AntagonistsReceptors, Adrenergic, beta-1Dopamine AntagonistsBinding SitesCyclohexanolsGlucagon-Like Peptide 1Stereoisomerism