OligospermiaAzoospermiaInfertility, MaleSperm CountMesteroloneChromosomes, Human, YSpermatogenesisTestisHydrocarbons, BrominatedSperm MotilitySpermatozoaSperm RetrievalPoint MutationMutationMutation, MissenseTestosteroneSeminal Plasma ProteinsFrameshift MutationTesticular DiseasesSperm Injections, IntracytoplasmicPedigreeSex Chromosome Disorders of Sex DevelopmentSex Chromosome AberrationsBase SequenceMolecular Sequence DataY ChromosomeKlinefelter SyndromeVasovasostomyMicrosurgeryGerm-Line MutationSemenVasectomyExonsAmino Acid SequenceDNA Mutational AnalysisAllelesPhenotypeAmino Acid SubstitutionReproductive TechniquesHeterozygotePolymerase Chain ReactionContraceptive Agents, MaleSequence Tagged SitesSpermatidsEpididymisSemen AnalysisGene DeletionHomozygoteVas DeferensChromosome DeletionSuctionCodon, NonsenseXYY KaryotypeVaricoceleMutagenesis, Site-DirectedGenes, RecessiveGenetic LociTissue and Organ HarvestingGenotypeEjaculationSequence DeletionCryopreservationFollicle Stimulating HormoneGenes, DominantSequence Analysis, DNABiopsyGenetic TestingDNA PrimersEmbryo TransferMutation RatePregnancy RateEjaculatory DuctsSemen PreservationMicroinjectionsChromosome MappingFertilization in Vitro