OligospermiaInfertility, MaleAzoospermiaChromosomes, Human, YAsthenozoospermiaSperm CountSpermatozoaSperm MotilitySpermatogenesisSex Chromosome AberrationsSex Chromosome Disorders of Sex DevelopmentSemenSemen AnalysisVaricoceleMesteroloneTestisSeminal Plasma ProteinsHydrocarbons, BrominatedSequence Tagged SitesKlinefelter SyndromeAneuploidyY ChromosomeFertilityChromosome DeletionSperm Injections, IntracytoplasmicIn Situ Hybridization, FluorescenceKaryotypingChromosome AberrationsTestosteroneSertoli Cell-Only SyndromeProtaminesSpermatic CordPolymerase Chain ReactionPregnancyEjaculationChromosomes, Human, Pair 18Couples TherapyChromosomes, Human, Pair 21Genital Diseases, MaleChromosomes, Human, Pair 13Chromosomes, Human, XInfertilityPachytene StageVasectomyReproductive Techniques, AssistedAcrosome ReactionSperm HeadSperm-Ovum InteractionsMenUrologic Surgical Procedures, MaleGenetic LociAbnormal KaryotypeXYY KaryotypeVasovasostomyCryptorchidismTesticular DiseasesUreaplasma urealyticumEjaculatory DuctsTunisiaFertilization in VitroDNA FragmentationCase-Control StudiesSpermatidsMeiosisMicrosurgeryFollicle Stimulating HormoneSpousesSynaptonemal ComplexGene DeletionMosaicism