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Beginning of Human LifeAbortion, InducedFertilizationFertilization in VitroPersonhoodHuman CharacteristicsJudaismLifeAbortion, SpontaneousValue of LifeAbortion, VeterinaryAbortion, CriminalAbortion, TherapeuticBioethical IssuesHuman DevelopmentEthical TheoryReligion and MedicinePhilosophy, MedicalAbortion ApplicantsLongevitySpermatozoaMoralsAbortion, MissedAbortion, SepticSperm-Ovum InteractionsEthics, MedicalQuality of LifeAbortion, HabitualPregnancy Reduction, MultifetalEmbryo ResearchOvumOocytesAbortion, ThreatenedPregnancyEmbryo TransferCloning, OrganismAbortifacient AgentsZygoteBiological EvolutionZona PellucidaAbortion, IncompleteSperm Injections, IntracytoplasmicSperm MotilityAgingAborted FetusPregnancy RateSea UrchinsAbortifacient Agents, SteroidalInfertility, FemaleAcrosomePregnancy OutcomeAbortion, EugenicCleavage Stage, OvumEmbryonic DevelopmentCryopreservationFertilizersAcrosome ReactionOvulation InductionSperm CapacitationBlastocystFertilityInfertility, MaleInfertilityMisoprostolAbortifacient Agents, NonsteroidalEmbryo ImplantationPregnancy, UnplannedMicroinjectionsEgg ProteinsPregnancy, UnwantedEmbryonic and Fetal DevelopmentTime FactorsPregnancy Trimester, FirstVacuum CurettageReproductive TechniquesVitelline MembraneInsemination, ArtificialParthenogenesisEmbryo, MammalianReproductionFetal DeathSperm HeadGestational AgeOogenesisBirth RateOocyte RetrievalFollicular FluidSemen PreservationUrochordataContraceptionLegislation, MedicalMeiosisStarfishPregnant WomenChorionic GonadotropinFallopian TubesOvarian FollicleReproductive Techniques, AssistedOvulationSterilization, Reproductive