TheologyBeginning of Human LifeValue of LifeEuthanasiaFertilizationReligion and MedicineFertilization in VitroPersonhoodHuman CharacteristicsJudaismLifeBioethical IssuesHuman DevelopmentEthical TheoryPhilosophy, MedicalLongevitySpermatozoaSperm-Ovum InteractionsMoralsQuality of LifeEthics, MedicalPregnancy Reduction, MultifetalEmbryo ResearchOvumOocytesPregnancyEmbryo TransferCloning, OrganismZygoteBiological EvolutionZona PellucidaSperm Injections, IntracytoplasmicSperm MotilityAgingSea UrchinsPregnancy RateAcrosomeCleavage Stage, OvumInfertility, FemaleFertilizersAcrosome ReactionSperm CapacitationEmbryonic DevelopmentCryopreservationBlastocystOvulation InductionInfertility, MaleInfertilityEgg ProteinsMicroinjectionsEmbryo ImplantationFertilityEmbryonic and Fetal DevelopmentVitelline MembraneParthenogenesisPregnancy OutcomeSperm HeadOogenesisInsemination, ArtificialOocyte RetrievalFollicular FluidSemen PreservationUrochordataEmbryo, MammalianReproductive TechniquesTime FactorsStarfishFallopian TubesOvarian FollicleMeiosisOvulationOvuleReproductionChorionic GonadotropinSemenMenotropinsReproductive Techniques, AssistedSperm CountOocyte DonationCumulus CellsAcrosinEmbryo Culture TechniquesOvaryEchinodermataSuperovulationInseminationSperm TransportFollicle Stimulating HormoneLive BirthIn Vitro Oocyte Maturation TechniquesEmbryo, NonmammalianEpididymisCattlePollen TubeOligospermiaMicromanipulationTestisPregnancy, MultipleFallopian Tube DiseasesMolecular Sequence Data