Infertility, MaleOligospermiaAzoospermiaInfertilitySperm CountInfertility, FemaleSpermatogenesisSperm MotilityChromosomes, Human, YSpermatozoaMesteroloneTestisHydrocarbons, BrominatedAsthenozoospermiaVaricoceleSemen AnalysisSemenTestosteroneReproductive Techniques, AssistedFertilitySeminal Plasma ProteinsSertoli Cell-Only SyndromeY ChromosomeFertilization in VitroSperm Injections, IntracytoplasmicSex Chromosome Disorders of Sex DevelopmentAndrologyOrchitisSex Chromosome AberrationsPregnancyAbnormal KaryotypeSperm RetrievalSpermatidsEpididymisVasovasostomySertoli CellsProtaminesReproductive TechniquesFallopian Tube DiseasesSperm TailPregnancy RateChromosome DeletionSeminiferous TubulesKlinefelter SyndromeEjaculationReproductive MedicineTesticular DiseasesSperm-Ovum InteractionsSperm MaturationAcrosomeKartagener SyndromeGenital Diseases, MaleFertility Agents, MaleInsemination, ArtificialFertilizationCryptorchidismSequence Tagged SitesEndometriosisSpermatogoniaCiliary Motility DisordersHysterosalpingographyMenAcrosome ReactionHypogonadismFollicle Stimulating HormoneCase-Control StudiesSperm HeadPregnancy OutcomeSpermatocytesAxonemal DyneinsEpididymitisEjaculatory DuctsVas DeferensEmbryo TransferMeiosisClomipheneGene DeletionMicrosurgeryUrologic Surgical Procedures, MaleZona PellucidaMutationTesticular NeoplasmsInseminationSperm CapacitationAnovulationGerm CellsGenitalia, MaleChromosome AberrationsSloveniaScrotumOvulation InductionPolymorphism, Single NucleotideRisk FactorsPolymerase Chain ReactionGenetic LociMice, KnockoutRNA-Binding ProteinsGene FrequencyMicroinjectionsOocytes