TheologyBeginning of Human LifeValue of LifeEuthanasiaFertilizationReligion and MedicineFertilization in VitroPersonhoodLifeHuman CharacteristicsJudaismQuality of LifeHuman DevelopmentBioethical IssuesEthical TheoryPhilosophy, MedicalLongevitySpermatozoaSperm-Ovum InteractionsMoralsEthics, MedicalPregnancy Reduction, MultifetalEmbryo ResearchOvumOocytesPregnancyEmbryo TransferCloning, OrganismBiological EvolutionZygoteZona PellucidaSperm Injections, IntracytoplasmicSperm MotilityAgingSea UrchinsPregnancy RateAcrosomeCleavage Stage, OvumInfertility, FemaleFertilizersEmbryonic DevelopmentAcrosome ReactionSperm CapacitationCryopreservationBlastocystOvulation InductionInfertility, MaleInfertilityEgg ProteinsMicroinjectionsFertilityEmbryo ImplantationEmbryonic and Fetal DevelopmentTime FactorsVitelline MembraneLife Change EventsPregnancy OutcomeParthenogenesisSperm HeadOogenesisInsemination, ArtificialUrochordataEmbryo, MammalianOocyte RetrievalFollicular FluidSemen PreservationLife Cycle StagesReproductive TechniquesStarfishReproductionFallopian TubesOvarian FollicleMeiosisOvulationOvuleChorionic GonadotropinSemenReproductive Techniques, AssistedLife TablesMenotropinsSperm CountOocyte DonationOvaryCumulus CellsAcrosinEmbryo Culture TechniquesQuestionnairesEchinodermataLife Support CareInseminationSuperovulationSperm TransportFollicle Stimulating HormoneTreatment OutcomeLive BirthEmbryo, NonmammalianIn Vitro Oocyte Maturation TechniquesMolecular Sequence DataEpididymisCattle