CorticosteronePituitary-Adrenal SystemHypothalamo-Hypophyseal SystemRestraint, PhysicalStress, PhysiologicalMetyraponeAdrenal GlandsAdrenocorticotropic HormoneAdrenalectomyCorticotropin-Releasing HormoneStress, PsychologicalSwimmingReceptors, GlucocorticoidReceptors, Corticotropin-Releasing HormoneRats, Sprague-DawleyBehavior, AnimalParaventricular Hypothalamic NucleusExploratory BehaviorAnxietyMaze LearningEtherRats, WistarRadioimmunoassayMotor ActivityHandling (Psychology)EatingHippocampusAnalysis of VarianceMice, Inbred C57BLMaternal DeprivationGlucocorticoidsMifepristoneAdrenal CortexBody WeightPro-OpiomelanocortinHindlimb SuspensionRNA, MessengerHypothalamusHousing, AnimalPlasmaNeurosecretory SystemsReceptors, MineralocorticoidOrgan SizeImmobilizationCircadian RhythmBiogenic MonoaminesSocial IsolationHormone AntagonistsArginine VasopressinCortodoxoneImmobility Response, TonicTime FactorsTranscortinDisease Models, AnimalAnimals, NewbornInjections, IntraventricularDexamethasoneProto-Oncogene Proteins c-fosRats, Inbred StrainsPituitary GlandDose-Response Relationship, DrugHormonesAmygdalaSubstance Withdrawal SyndromeFeeding BehaviorCrowdingBlood GlucoseBody TemperatureTestosteroneAdrenal Cortex HormonesBrainCocaineDrinkingSerotoninMice, KnockoutProlactin11-beta-Hydroxysteroid Dehydrogenase Type 1PregnancyAldosteroneMorphineElectroshockLiverNorepinephrineHabituation, PsychophysiologicRandom AllocationAgingLipopolysaccharidesInsulinNesting BehaviorFood Deprivation