Administration, OralDrug Administration ScheduleInjections, IntravenousDose-Response Relationship, DrugTime FactorsUnited States Food and Drug AdministrationDrug Administration RoutesRats, Sprague-DawleyRats, WistarAdministration, IntranasalDisease Models, AnimalInjections, IntraperitonealLiverMice, Inbred C57BLInjections, SubcutaneousBiological AvailabilityAdministration, RectalHalf-LifeInjections, IntramuscularInfusions, IntravenousAdministration, TopicalArea Under CurveDrug InteractionsAdministration, IntravenousMice, Inbred BALB CTreatment OutcomeRats, Inbred StrainsTissue DistributionDogsInjections, IntraventricularDouble-Blind MethodCross-Over StudiesAdministration, CutaneousRecombinant ProteinsBrainBlood PressureBody WeightKidneyRandom AllocationAdministration, InhalationRabbitsAnalysis of VarianceKineticsChromatography, High Pressure LiquidRNA, MessengerPlant ExtractsInfusions, ParenteralBehavior, AnimalAdministration, SublingualOrgan SizePregnancyMorphineDrug ToleranceInjectionsLungMetabolic Clearance RateMolecular Sequence DataEthanolCells, CulturedRats, Inbred F344Motor ActivityAnalgesics, OpioidHeart RateMice, Inbred StrainsMice, KnockoutMice, Inbred ICRInjections, SpinalDrug CombinationsAntineoplastic AgentsEstradiolAntibodies, MonoclonalDrug Therapy, CombinationHemodynamicsProdrugsEnzyme InhibitorsSpleenDrug Evaluation, PreclinicalSelf AdministrationBlood GlucoseUnited StatesIntestinal AbsorptionModels, BiologicalProspective StudiesAnalgesicsEatingImmunohistochemistryAnti-Bacterial AgentsDrug SynergismPiperidinesTherapeutic EquivalencyInjections, Intra-ArterialAmino Acid SequenceAbsorptionAnti-Inflammatory Agents, Non-SteroidalGenetic VectorsInsulinSwineAntioxidantsCytokinesDelayed-Action Preparations