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FetusFetal Tissue TransplantationComplicityAborted FetusClinical Trials as TopicDirected Tissue DonationMaternal-Fetal ExchangePregnancyPlacentaLifeResearchPersonhoodAbortion, VeterinaryBeginning of Human LifeResearch DesignResearch PersonnelGestational AgeFetal ResearchResearch Support as TopicPregnancy, AnimalCivil RightsScienceTherapeutic Human ExperimentationNontherapeutic Human ExperimentationPregnant WomenAbortion, InducedAmniotic FluidBrain Tissue TransplantationEthics, ResearchEthics, MedicalClinical Trials, Phase III as TopicExtraembryonic MembranesFetal DiseasesFetal ResorptionTissue DistributionBiomedical ResearchHydrops FetalisSocial Control, FormalAdvisory CommitteesTreatment OutcomeMoral ObligationsClinical Trials, Phase II as TopicLiverFetal WeightEmbryonic and Fetal DevelopmentFetal DeathClinical Trials, Phase I as TopicInformed ConsentTranslational Medical ResearchAbortion, LegalHistory, 20th CenturyFederal GovernmentControlled Clinical Trials as TopicChorionic VilliPlacenta DiseasesDouble-Blind MethodNursing ResearchTime FactorsUnited StatesFetal DevelopmentYolk SacRandomized Controlled Trials as TopicGovernment RegulationTrophoblastsPatient SelectionUterusNeoplasmsRNA, MessengerPregnancy Complications, InfectiousFetal BloodPregnancy Trimester, FirstMolecular Sequence DataHistory, 21st CenturyMoralsNational Institutes of Health (U.S.)Health Services ResearchAcademies and InstitutesBrainSheepOrgan SpecificityBase SequenceFetal ViabilityMulticenter Studies as TopicPublishingPrenatal DiagnosisGenetic ResearchImmunohistochemistryGenomic ImprintingAntibodies, MonoclonalNobel PrizeScientific MisconductPeriodicals as TopicInternetKidneyEmbryo, MammalianGene Expression Regulation, DevelopmentalRisk AssessmentClinical Nursing ResearchAntigens, NeoplasmPlacebos