Mice, KnockoutMice, Inbred C57BLReceptor, Muscarinic M4Gene Knockout TechniquesReceptor, Muscarinic M2Receptor, Adenosine A2AReceptors, LDLReceptor, Serotonin, 5-HT1BReceptor, Muscarinic M5Receptor, Muscarinic M3Receptor, Adenosine A1Receptors, Opioid, muReceptor, Bradykinin B2Behavior, AnimalReceptors, Dopamine D2Motor ActivityDisease Models, AnimalReceptors, Dopamine D1Receptor, Adenosine A2BReceptors, Dopamine D5Receptor, Bradykinin B1Receptors, SomatotropinOxotremorineReceptors, Dopamine D3Receptor, Serotonin, 5-HT1AEchiumReceptors, GlucagonAtherosclerosisAdenosine A1 Receptor AntagonistsReceptors, FSHSignal TransductionMuscarinic AntagonistsReceptors, MuscarinicReceptors, BradykininReceptors, Neuropeptide YReceptors, InterferonReceptor, Cannabinoid, CB1Receptors, Neurokinin-1Mice, TransgenicMaze LearningDose-Response Relationship, DrugGene TargetingReceptors, SerotoninReceptors, Opioid, deltaMice, 129 StrainReceptors, Purinergic P1Gene DeletionDiet, AtherogenicReceptors, VasopressinRNA, MessengerPhenotypeSwimmingMorphineReceptor, Adenosine A3Muscarinic AgonistsExploratory BehaviorLiverCentral Nervous System SensitizationReceptors, Opioid, kappaSirtuin 3PirenzepineReceptor, InsulinInsulinAdenosineBody WeightPiperidinesPhenethylaminesReceptor, Angiotensin, Type 1Hindlimb SuspensionModels, AnimalReceptors, Prostaglandin E, EP3 SubtypeGene Expression RegulationHomozygoteReceptors, CannabinoidConditioning, OperantAutoreceptorsPancreatic PolypeptideCells, CulturedAntidiuretic AgentsDopamine AntagonistsBrainReverse Transcriptase Polymerase Chain ReactionReceptor, Interferon alpha-betaFenclonineSerotonin AgentsReceptors, Gastrointestinal HormoneTime FactorsOpioid PeptidesOrgan SizeReceptors, OpioidGenotypeChlamydiaceae InfectionsSerotonin Receptor AgonistsReceptors, Serotonin, 5-HT1AnalgesiaHeterozygoteReceptors, G-Protein-CoupledHomeostasisReceptors, CalcitriolBlotting, Western