Administration, OralBiological AvailabilityDose-Response Relationship, DrugArea Under CurveDrug Administration ScheduleDelayed-Action PreparationsHalf-LifeDrug InteractionsDouble-Blind MethodChromatography, High Pressure LiquidTime FactorsTreatment OutcomeInjections, IntravenousRats, Sprague-DawleyRats, WistarUnited States Food and Drug AdministrationDrug Administration RoutesDisease Models, AnimalInjections, IntraperitonealInjections, SubcutaneousInfusions, IntravenousLiverAdministration, IntranasalLethal Dose 50Radiation DosageInjections, IntramuscularMice, Inbred C57BLAdministration, InhalationMice, Inbred BALB CDogsRats, Inbred StrainsBody WeightAdministration, TopicalInjections, IntraventricularBlood PressureRandom AllocationAdministration, RectalDose-Response Relationship, RadiationDrug Therapy, CombinationKidneyRadiometryAntineoplastic AgentsAdministration, IntravenousRecombinant ProteinsBrainMetabolic Clearance RatePlant ExtractsBehavior, AnimalAnalysis of VarianceDrug ToleranceInfusions, ParenteralAdministration, CutaneousMorphineDrug CombinationsRadiotherapy DosageRats, Inbred F344RabbitsLungMice, Inbred ICRInjectionsHeart RateTissue DistributionAnalgesics, OpioidPregnancyCross-Over StudiesDrug SynergismNeoplasmsOrgan SizeMice, Inbred StrainsAntibodies, MonoclonalEstradiolInjections, SpinalSpleenHemodynamicsMotor ActivityRNA, MessengerEthanolPiperidinesDrug Evaluation, PreclinicalDose FractionationAdministration, SublingualCells, CulturedAnti-Inflammatory Agents, Non-SteroidalProspective StudiesDose-Response Relationship, ImmunologicGlucocorticoidsDrug EvaluationAnalgesicsMethylprednisoloneSelf AdministrationHydrocortisoneEnzyme InhibitorsAntineoplastic Combined Chemotherapy ProtocolsCyclophosphamideDexamethasoneMice, KnockoutCocaineNeoplasms, ExperimentalNaloxoneAnti-Bacterial Agents