Infertility, MaleOligospermiaAzoospermiaSperm CountSperm MotilityInfertilityAsthenozoospermiaInfertility, FemaleTestisSpermatogenesisChromosomes, Human, YSpermatozoaMesteroloneFertilityHydrocarbons, BrominatedCopulationVaricoceleSemen AnalysisSemenSexual Behavior, AnimalSex CharacteristicsTestosteroneReproductive Techniques, AssistedReproductionSeminal Plasma ProteinsSertoli Cell-Only SyndromeY ChromosomeFertilization in VitroSperm Injections, IntracytoplasmicAndrologySex Chromosome Disorders of Sex DevelopmentOrchitisSex Chromosome AberrationsPregnancyAbnormal KaryotypeSperm RetrievalSpermatidsEpididymisVasovasostomySertoli CellsProtaminesReproductive TechniquesFallopian Tube DiseasesSperm TailPregnancy RateChromosome DeletionSeminiferous TubulesReproductive MedicineKlinefelter SyndromeEjaculationSperm-Ovum InteractionsTesticular DiseasesSperm MaturationAcrosomeKartagener SyndromeFertility Agents, MaleInsemination, ArtificialFertilizationGenital Diseases, MaleCryptorchidismSequence Tagged SitesEndometriosisCiliary Motility DisordersHysterosalpingographySpermatogoniaAcrosome ReactionFollicle Stimulating HormoneAxonemal DyneinsSperm HeadSpermatocytesPregnancy OutcomeHypogonadismEpididymitisEjaculatory DuctsCase-Control StudiesVas DeferensEmbryo TransferMeiosisClomipheneGene DeletionZona PellucidaMicrosurgeryUrologic Surgical Procedures, MaleInseminationSperm CapacitationMutationAnovulationTesticular NeoplasmsGerm CellsChromosome AberrationsOvulation InductionSloveniaGenitalia, MaleScrotumMice, KnockoutRNA-Binding ProteinsGenetic LociPolymorphism, Single NucleotidePolymerase Chain ReactionMicroinjections