Seminiferous TubulesTestisSertoli CellsSpermatogenesisSperm CountSeminiferous EpitheliumSpermatogoniaSperm HeadSpermatidsKidney Tubules, ProximalEpididymisSpermatozoaInfertility, MaleLeydig CellsSperm CapacitationRete TestisKidney TubulesBlood-Testis BarrierCryptorchidismOrchitisSpermatocytesMalpighian TubulesTestosteroneOrgan SizeKidney Tubules, DistalFertilitySexual MaturationSperm MaturationTesticular DiseasesGerm CellsAcrosomeGenitalia, MaleAntispermatogenic AgentsSperm TransportSemenFollicle Stimulating HormoneSperm-Ovum InteractionsVasectomySeminal VesiclesTransilluminationSperm Injections, IntracytoplasmicOrnipressinKidney Tubules, CollectingAndrogen-Binding ProteinFertilizationSperm MidpieceOligospermiaImmunohistochemistryRats, Sprague-DawleyMicroscopy, ElectronHistocytochemistrySperm BanksDibutyl PhthalateSemen PreservationInhibinsBody FluidsLuteinizing HormoneCryopreservationSperm MotilityRats, WistarRats, Inbred StrainsReproductionSemen AnalysisToxicity TestsMeiosisZona PellucidaRNA, MessengerSpermatic Cord TorsionAzoospermiaScrotumDisorders of Sex Development3-Hydroxysteroid DehydrogenasesKlinefelter SyndromeSpermatic CordIn Situ Nick-End LabelingTime FactorsVas DeferensTesticular NeoplasmsEjaculationTestosterone PropionateMicroinjectionsCell CountTissue DistributionMice, Inbred C57BLAtrophyCells, CulturedFluorescent Antibody TechniqueSwineSperm WhaleIn Situ HybridizationBody WeightHexanonesMolecular Sequence DataKidneyAnimals, NewbornBlotting, WesternMesylatesMice, Inbred ICRMice, TransgenicPregnancy