TestosteroneHormonesLuteinizing HormoneFollicle Stimulating HormoneGonadal Steroid HormonesThyroid HormonesTestosterone PropionateGonadotropin-Releasing HormoneAndrogensHypogonadismEstradiolOrchiectomyDihydrotestosteroneTestisParathyroid HormoneSex Hormone-Binding GlobulinHormone Replacement TherapyCastrationHuman Growth HormoneEpitestosteroneAndrostenedioneAdrenocorticotropic HormoneReceptors, Thyroid HormonePituitary HormonesProgesteronePituitary GlandProlactinFlutamideRadioimmunoassaySexual MaturationDehydroepiandrosteroneTriiodothyronineChorionic GonadotropinReceptors, AndrogenOrgan SizeEstrogensGonadal HormonesSex CharacteristicsTestosterone CongenersSteroidsDrug ImplantsJuvenile HormonesGrowth Hormone-Releasing HormoneHydrocortisoneGonadotropins, Pituitary3-Oxo-5-alpha-Steroid 4-DehydrogenaseAnti-Mullerian HormoneThyroxineAromataseSexual Behavior, AnimalCorticotropin-Releasing HormoneOvaryAndrogen AntagonistsDehydroepiandrosterone SulfatePeptide HormonesPituitary Hormone-Releasing HormonesSpermatogenesisLeuprolideEstroneOvariectomyInhibinsProstateSperm CountHormone AntagonistsGenitalia, MaleLibidoVirilismHirsutismAndrostanesHypothalamic HormonesPituitary Hormones, AnteriorThyrotropin17-alpha-HydroxyprogesteroneHypophysectomyPregnancyCyproteroneAndrostane-3,17-diolAndrosteroneSeminal VesiclesRNA, Messenger17-Hydroxysteroid DehydrogenasesRats, Sprague-DawleyThyroid Hormone Receptors betaTime FactorsAgingSertoli CellsCyproterone AcetateTesticular Hormones17-KetosteroidsReproductionPituitary Gland, AnteriorSheepDose-Response Relationship, DrugBody WeightRats, Inbred StrainsInsulin-Like Growth Factor I3-Hydroxysteroid DehydrogenasesSteroid 17-alpha-HydroxylaseContraceptive Agents, MaleGastrointestinal Hormones