Gonadal Steroid HormonesSteroidsEstradiolTestosteroneOrchiectomyOvariectomySex CharacteristicsDihydrotestosteroneProgesteroneCastrationLuteinizing HormoneGonadotropin-Releasing HormoneGonadal HormonesSex DifferentiationTestosterone PropionateSexual MaturationLeuprolideEstrogensAndrogensEstrous CycleHypogonadismPituitary GlandPreoptic AreaGonadsHypothalamusKisspeptinsFollicle Stimulating HormoneReceptors, SteroidFollicle Stimulating Hormone, beta SubunitSexual Behavior, AnimalPituitary Hormone-Releasing HormonesPituitary Gland, AnteriorGonadotropins, PituitaryNeurokinin BGonadotropinsArcuate NucleusHypothalamus, MiddleOvaryReceptors, AndrogenReproductionAdrenal GlandsMenstrual CycleVocalization, AnimalReceptors, LHRHHormonesRats, Sprague-DawleyNeurosecretory SystemsFollicular PhaseBrainTestisHydrocortisoneEstrusRadioimmunoassayReceptors, ProgesteroneAnalysis of VarianceSteroid 21-HydroxylaseSheepReceptors, EstrogenGrowth HormoneRNA, MessengerSex FactorsNeuronsAdrenocorticotropic HormoneAnabolic AgentsAgingEstrogen Receptor alphaGene Expression RegulationProlactinIn Situ HybridizationGlucocorticoidsRats, Inbred StrainsRats, WistarBehavior, AnimalSteryl-SulfataseImmunohistochemistryPregnancyDehydroepiandrosteronePregnanesSeasonsSteroid HydroxylasesAnimals, NewbornAdrenal Cortex HormonesPregnenoloneHippocampusBody WeightPrednisoloneEtiocholanoloneAndrostanesAndrosteroneMethylprednisoloneAge FactorsSteroid IsomerasesAndrostenedioneDexamethasonePregnanoloneSteroid 11-beta-HydroxylaseAnti-Inflammatory AgentsReceptors, GlucocorticoidHydroxyprogesterones3-Oxo-5-alpha-Steroid 4-Dehydrogenase