Sperm TailOligospermiaAzoospermiaSpermatozoaSperm HeadTestisSperm CountInfertility, MaleSpermatogenesisSpermatidsSperm MotilitySeminal Plasma ProteinsTailSperm CapacitationSperm RetrievalSperm Injections, IntracytoplasmicChromosomes, Human, YEpididymisInjectionsKlinefelter SyndromeSperm MaturationAcrosomeSperm MidpieceSperm-Ovum InteractionsSemenFertilityY ChromosomeEjaculationCryopreservationTissue and Organ Harvestingt-Complex Genome RegionFertilizationMicrosurgerySemen PreservationTesticular DiseasesSex Chromosome Disorders of Sex DevelopmentMicroscopy, ElectronMicroinjectionsSemen AnalysisSperm TransportSequence Tagged SitesReproductive TechniquesSex Chromosome AberrationsVasectomyVaricoceleSertoli CellsFertilization in VitroPregnancy RateSea UrchinsMolecular Sequence DataDyneinsFollicle Stimulating HormoneGenetic LociEpitestosteroneBiopsyAcrosome ReactionPregnancyAmino Acid SequenceInsemination, ArtificialKaryotypingTestosteroneInjections, IntravenousSuctionContraceptive Agents, MaleInjections, IntramuscularFlagellaReproductive Techniques, AssistedSperm BanksMicrotubulesChromosome DeletionAneuploidyBase SequenceChromosome AberrationsIn Situ Hybridization, FluorescenceFluorescent Antibody TechniqueProteinsInjections, SubcutaneousInjections, IntralesionalInjections, Intra-ArticularPregnancy OutcomeInhibinsCiliaHeat-Shock ProteinsZona PellucidaTesticular NeoplasmsGene DeletionImmunohistochemistryDNA, ComplementaryInjections, Intraperitoneal