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FetusFetal Tissue TransplantationComplicityAborted FetusResearchDirected Tissue DonationMaternal-Fetal ExchangePregnancyPlacentaLifePersonhoodBeginning of Human LifeAbortion, VeterinaryResearch Support as TopicFetal ResearchEthics, ResearchGestational AgeResearch DesignResearch PersonnelCivil RightsPregnancy, AnimalNontherapeutic Human ExperimentationTherapeutic Human ExperimentationNursing ResearchPregnant WomenAbortion, InducedAmniotic FluidEthics, MedicalBrain Tissue TransplantationHealth Services ResearchExtraembryonic MembranesTranslational Medical ResearchFetal DiseasesFetal ResorptionLiverSocial Control, FormalHydrops FetalisTissue DistributionMoral ObligationsGenetic ResearchAdvisory CommitteesInformed ConsentFetal WeightEmbryonic and Fetal DevelopmentFetal DeathFederal GovernmentAbortion, LegalHistory, 20th CenturyChorionic VilliPlacenta DiseasesUnited StatesFetal DevelopmentMoralsMolecular Sequence DataClinical Nursing ResearchRNA, MessengerYolk SacTrophoblastsGovernment RegulationUterusBrainDental ResearchHuman ExperimentationTime FactorsBase SequenceFetal BloodPregnancy Trimester, FirstOrgan SpecificityCommunity-Based Participatory ResearchBehavioral ResearchPregnancy Complications, InfectiousQualitative ResearchHistory, 19th CenturySheepFetal ViabilityImmunohistochemistryClinical Trials as TopicPersonal AutonomyEmbryo, MammalianPrenatal DiagnosisGenomic ImprintingTissue and Organ ProcurementGene Expression Regulation, DevelopmentalHistory, 21st CenturyTreatment OutcomeKidneyEmbryo ResearchRisk AssessmentPolymerase Chain ReactionNational Institutes of Health (U.S.)AmnionInfant, NewbornAmino Acid SequenceRisk FactorsLungCell DifferentiationDisease Models, AnimalRandomized Controlled Trials as TopicDissent and DisputesAcademies and Institutes