OligospermiaAzoospermiaInfertility, MaleSemenSemen AnalysisSperm CountAsthenozoospermiaSpermatozoaChromosomes, Human, YVaricoceleSperm MotilitySpermatogenesisSpermatoceleTestisSex Chromosome AberrationsMesteroloneSeminal Plasma ProteinsSemen PreservationSperm RetrievalSex Chromosome Disorders of Sex DevelopmentSperm Injections, IntracytoplasmicKlinefelter SyndromeSequence Tagged SitesHydrocarbons, BrominatedY ChromosomeFertilitySperm HeadTestosteroneSperm CapacitationChromosome DeletionEjaculationTesticular DiseasesEpididymisSperm MaturationVasectomyAneuploidyCryopreservationVasovasostomyKaryotypingMicrosurgeryPregnancyReproductive TechniquesChromosome AberrationsContraceptive Agents, MaleFertilizationIn Situ Hybridization, FluorescenceInsemination, ArtificialSpermatidsSperm-Ovum InteractionsPregnancy RateSperm TransportSperm BanksVas DeferensAcrosomeTissue and Organ HarvestingSuctionXYY KaryotypeFollicle Stimulating HormonePolymerase Chain ReactionMicroinjectionsEjaculatory DuctsFertilization in VitroEmbryo TransferGenetic LociSperm MidpieceBiopsySertoli CellsReproductive Techniques, AssistedGenital Diseases, MalePregnancy OutcomeEpitestosteroneInhibinsInfertilityZona PellucidaCryptorchidismTuberculosis, Male GenitalSeminiferous TubulesEpididymitisSpecimen HandlingGonadal Dysgenesis, Mixed