AzoospermiaOligospermiaInfertility, MaleChromosomes, Human, YSperm CountAsthenozoospermiaSpermatogenesisSpermatozoaTestisSperm MotilitySex Chromosome AberrationsMesteroloneSeminal Plasma ProteinsSemenSex Chromosome Disorders of Sex DevelopmentSemen AnalysisSperm RetrievalSperm Injections, IntracytoplasmicSequence Tagged SitesKlinefelter SyndromeHydrocarbons, BrominatedY ChromosomeVaricoceleSperm HeadFertilityChromosome DeletionSperm CapacitationTestosteroneTesticular DiseasesSperm MaturationEpididymisAneuploidyVasovasostomyKaryotypingMicrosurgeryVasectomySemen PreservationChromosome AberrationsEjaculationReproductive TechniquesContraceptive Agents, MaleIn Situ Hybridization, FluorescencePregnancyCryopreservationFertilizationSpermatidsSuctionVas DeferensSperm TransportTissue and Organ HarvestingXYY KaryotypeSperm-Ovum InteractionsPregnancy RateMicroinjectionsFollicle Stimulating HormonePolymerase Chain ReactionAcrosomeGenetic LociEjaculatory DuctsSperm MidpieceBiopsyEmbryo TransferSertoli CellsFertilization in VitroSperm BanksEpitestosteroneTuberculosis, Male GenitalPregnancy OutcomeReproductive Techniques, AssistedSeminiferous TubulesInhibinsZona PellucidaCryptorchidismGonadal Dysgenesis, MixedEpididymitis