Genes, sryTestisSex-Determining Region Y ProteinSex Determination ProcessesSex DifferentiationSOX9 Transcription FactorDisorders of Sex DevelopmentY ChromosomeSertoli CellsHigh Mobility Group ProteinsRete TestisSpermatogenesisCryptorchidismLeydig CellsSpermatozoaSpermatidsSpermatogoniaSex Determination AnalysisMolecular Sequence DataEpididymisSeminiferous EpitheliumTestosteroneChromatography, High Pressure LiquidSpermatocytesTesticular DiseasesTesticular NeoplasmsCalibrationAmino Acid SequenceBase SequenceReproducibility of ResultsGerm CellsOrgan SizeSperm CountFlow Injection AnalysisRNA, MessengerGenitalia, MaleInfertility, MaleSexual MaturationIndicators and ReagentsSpermatic Cord TorsionOrchitisGonadsTissue DistributionScrotumSensitivity and SpecificityGene Expression Regulation, DevelopmentalLimit of DetectionMethodsImmunohistochemistryReference StandardsOvarySpectrophotometry, UltravioletOrgan SpecificityCloning, MolecularTime FactorsBlood-Testis BarrierIn Situ Hybridization