AzoospermiaOligospermiaSperm CountInfertility, MaleSperm RetrievalTestisChromosomes, Human, YSperm Injections, IntracytoplasmicSperm HeadSpermatogenesisSeminal Plasma ProteinsSperm CapacitationSpermatozoaSemenTesticular DiseasesSperm MaturationEpididymisSemen AnalysisY ChromosomeSex Chromosome Disorders of Sex DevelopmentSex Chromosome AberrationsVasovasostomyKlinefelter SyndromeMicrosurgeryVasectomySemen PreservationEjaculationReproductive TechniquesContraceptive Agents, MaleCryopreservationFertilizationSequence Tagged SitesSpermatidsSperm MotilitySuctionVas DeferensSperm TransportTissue and Organ HarvestingFertilityXYY KaryotypeSperm-Ovum InteractionsPregnancy RateVaricoceleMicroinjectionsFollicle Stimulating HormoneAcrosomeChromosome DeletionGenetic LociEjaculatory DuctsAsthenozoospermiaSperm MidpieceTestosteronePregnancyBiopsyEmbryo TransferSertoli CellsFertilization in VitroSperm BanksEpitestosteroneTuberculosis, Male GenitalPregnancy OutcomeReproductive Techniques, AssistedSeminiferous TubulesInhibinsZona PellucidaCryptorchidismKaryotypingGonadal Dysgenesis, MixedEpididymitisAbnormal KaryotypeGenital Diseases, MaleRNA-Binding ProteinsGene DeletionInsemination, ArtificialInfertilityDesogestrelOocytesSpecimen HandlingChromosome AberrationsSperm WhaleMeiosisHypogonadismMicromanipulationAdrenal Rest TumorLuteinizing HormoneOstomyMyoclonic Epilepsies, ProgressiveGlycerylphosphorylcholineKaryotypeTesticular NeoplasmsMicrodissectionAneuploidyEmbryo ImplantationCytogenetic AnalysisOvum