DinitrophenolsAdministration, OralDrug Administration ScheduleInjections, IntravenousUnited States Food and Drug AdministrationDrug Administration RoutesDose-Response Relationship, DrugRats, Sprague-DawleyTime FactorsAdministration, IntranasalRats, WistarInjections, IntraperitonealDisease Models, AnimalInjections, SubcutaneousAdministration, RectalLiverMice, Inbred C57BLBiological AvailabilityInjections, IntramuscularAdministration, TopicalInfusions, IntravenousHalf-LifeAdministration, IntravenousDrug InteractionsArea Under CurveInjections, IntraventricularMice, Inbred BALB CRats, Inbred StrainsAdministration, CutaneousTissue DistributionDogsDouble-Blind MethodCross-Over StudiesTreatment OutcomeBlood PressureAdministration, SublingualBrainAdministration, InhalationKidneyInfusions, ParenteralBody WeightRandom AllocationBehavior, AnimalDrug ToleranceMorphineRecombinant ProteinsPlant ExtractsInjectionsAnalysis of VarianceInjections, SpinalOrgan SizeMetabolic Clearance RateChromatography, High Pressure LiquidRNA, MessengerRabbitsMice, Inbred ICRLung