Semen AnalysisSemenSperm CountSperm MotilitySpermatozoaInfertility, MaleAndrologySperm HeadManuals as TopicSemen PreservationFertilityOligospermiaAsthenozoospermiaVaricoceleEjaculationSperm-Ovum InteractionsEmbryologyAcrosome ReactionInsemination, Artificial, HomologousTestisSpermatogenesisSperm BanksVasectomyAcrosomeStrongylocentrotusCryopreservationAzoospermiaInfertilityFertilizationFertilization in VitroSperm MaturationPregnancy RateWorld Health OrganizationSperm Injections, IntracytoplasmicSperm CapacitationSperm TailPregnancyMedical Laboratory PersonnelZona PellucidaEpididymisQuality ControlChromomycin A3Clinical Laboratory ServicesTestosteronePasseriformesInsemination, ArtificialScrotumSeminal Plasma ProteinsSpermatoceleReference ValuesReproductionReproductive Techniques, AssistedSexual AbstinenceSperm TransportFertility PreservationColoring AgentsChromosomes, Human, YMicroscopy, Phase-ContrastClinical Laboratory TechniquesFollicle Stimulating HormoneSperm MidpieceDNA FragmentationStaining and LabelingBiological EvolutionInfertility, FemaleIn Situ Hybridization, FluorescenceTime FactorsImage Processing, Computer-AssistedLuteinizing HormoneSeminal Vesicle Secretory ProteinsRetrospective StudiesSperm Whale