TestosteroneHypogonadismTestisSex Hormone-Binding GlobulinAndrogensLuteinizing HormoneOrchiectomyTestosterone PropionateGonadal Steroid HormonesEstradiolFollicle Stimulating HormoneDihydrotestosteroneDehydroepiandrosterone SulfateOrgan SizeLibidoAndrostenedioneSpermatogenesisLeydig CellsGonadotropin-Releasing HormoneCastrationVirilismSexual MaturationSperm CountHirsutismHormone Replacement TherapySexual Behavior, AnimalReceptors, AndrogenFlutamideSex CharacteristicsGenitalia, Male17-alpha-HydroxyprogesteronePolycystic Ovary Syndrome3-Oxo-5-alpha-Steroid 4-DehydrogenaseHyperandrogenismLeuprolideProstateAndrogen AntagonistsComb and WattlesTestosterone CongenersAndropauseRadioimmunoassayEpitestosteroneChorionic GonadotropinErectile DysfunctionAgingDehydroepiandrosteronePaternal Behavior17-Hydroxysteroid DehydrogenasesReproductionGonadotropinsCryptorchidismAgonistic BehaviorSeminiferous TubulesAromataseHormonesSertoli CellsTerritorialityDibutyl PhthalateSteroidsAscarididaEpididymisProlactinAdministration, CutaneousSeminal VesiclesPuberty3-Hydroxysteroid DehydrogenasesInfertility, MaleDrug ImplantsKlinefelter SyndromeProstatic NeoplasmsSteroid 17-alpha-HydroxylaseBody WeightFertilityProgesteroneCholestenone 5 alpha-ReductaseInhibinsGonadotropins, PituitaryPituitary GlandAphrodisiacsEstrogensEstroneGynecomastiaContraceptive Agents, MaleCopulationSeasonsSalivaNandroloneYttrium IsotopesTime Factors46, XY Disorders of Sex DevelopmentPenile ErectionDiethylstilbestrolHydrocortisoneFeminizationPenisRats, Sprague-DawleySemenHornsSocial DominanceSperm Motility