Sperm CountLeukocyte CountSemenSperm MotilityInfertility, MaleSperm HeadCD4 Lymphocyte CountSemen AnalysisOligospermiaSpermatogenesisPlatelet CountBlood Cell CountSpermatozoaTestisCell CountFertilitySperm CapacitationLymphocyte CountEpididymisEjaculationAzoospermiaHIV InfectionsAsthenozoospermiaLepidiumSperm-Ovum InteractionsTestosteroneTime FactorsSperm MaturationInsemination, Artificial, HomologousSperm Injections, IntracytoplasmicFertilizationContraceptive Agents, MaleCD4-Positive T-LymphocytesGenitalia, MaleSemen PreservationSperm TransportOrgan SizeSeminiferous TubulesInsemination, ArtificialFollicle Stimulating HormoneReproducibility of ResultsVaricoceleVasectomyAcrosomeReproductionMEDLARSPregnancySeminal Plasma ProteinsSperm MidpieceInfertilityLuteinizing HormoneSexual AbstinenceSperm BanksPregnancy RateInhibinsSeminal VesiclesChromosomes, Human, YPaternal ExposureGenital Diseases, MaleZona PellucidaEnvironmental PollutantsSexual MaturationHydrocarbons, BrominatedHypogonadismLitter SizeDenmarkSertoli CellsSeminiferous EpitheliumSexual Behavior, AnimalCryopreservationTesticular NeoplasmsSex Hormone-Binding GlobulinSperm WhaleCryptorchidismBody WeightSpermatidsMeiosisOvum