TestisEpitheliumRete TestisSpermatogenesisSeminiferous EpitheliumSertoli CellsEpithelium, CornealCryptorchidismLeydig CellsEpithelial CellsSpermatidsSpermatozoaRetinal Pigment EpitheliumEpididymisSpermatogoniaImmunohistochemistryOlfactory MucosaRNA, MessengerTestosteroneSpermatocytesTesticular DiseasesIn Situ HybridizationTesticular NeoplasmsRespiratory MucosaMolecular Sequence DataIntestinal MucosaReverse Transcriptase Polymerase Chain ReactionOrgan SizeGene Expression Regulation, DevelopmentalTissue DistributionSperm CountGenitalia, MaleBlood-Testis BarrierSexual MaturationBase SequenceGerm CellsGene ExpressionTracheaMicroscopy, ElectronCorneaInfertility, MaleOrchitisCell DifferentiationOvaryAmino Acid SequenceOrgan SpecificitySpermatic Cord TorsionScrotumCells, CulturedBronchiSeminal VesiclesMice, Inbred C57BLRats, Sprague-DawleyMice, TransgenicOrgan Culture TechniquesCiliary BodyHistocytochemistryDNA, ComplementaryBlotting, WesternSex DifferentiationBlotting, NorthernOrchiectomyConjunctivaMorphogenesisGene Expression RegulationNasal MucosaFertilityKeratinsTime FactorsRabbitsMetaplasiaMice, KnockoutMicroscopy, Electron, ScanningAnimals, NewbornCloning, MolecularGonadsImmunoenzyme TechniquesStem CellsFluorescent Antibody TechniquePregnancySex-Determining Region Y ProteinFollicle Stimulating HormoneSignal TransductionLungCell CountTranscription FactorsFluorescent Antibody Technique, IndirectUterusSex Determination ProcessesMucous MembraneTight JunctionsColonMembrane ProteinsFetusRats, Inbred StrainsSperm MaturationCattleProstateSertoli Cell TumorMouth Mucosa