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ResearchFetusFetal Tissue TransplantationComplicityAborted FetusTissue DonorsDirected Tissue DonationResearch Support as TopicResearch DesignPregnancyMaternal-Fetal ExchangeEthics, ResearchPlacentaLifeResearch PersonnelBlood DonorsPersonhoodLiving DonorsNursing ResearchBeginning of Human LifeAbortion, VeterinaryHealth Services ResearchTranslational Medical ResearchFetal ResearchGenetic ResearchGestational AgeNontherapeutic Human ExperimentationTherapeutic Human ExperimentationCivil RightsClinical Nursing ResearchPregnancy, AnimalDental ResearchInformed ConsentCommunity-Based Participatory ResearchAbortion, InducedPregnant WomenBehavioral ResearchQualitative ResearchEthics, MedicalAmniotic FluidBrain Tissue TransplantationUnited StatesLiverHuman ExperimentationSocial Control, FormalExtraembryonic MembranesTissue and Organ ProcurementFetal DiseasesAdvisory CommitteesMoral ObligationsFetal ResorptionTissue DistributionHydrops FetalisEmbryonic and Fetal DevelopmentFetal DeathFetal WeightFederal GovernmentMolecular Sequence DataAcademies and InstitutesAbortion, LegalTime FactorsEmpirical ResearchEmbryo ResearchFetal DevelopmentNational Institutes of Health (U.S.)Chorionic VilliPlacenta DiseasesGovernment RegulationRNA, MessengerBase SequenceCooperative BehaviorMoralsBrainHistory, 20th CenturyResearch ReportClinical Trials as TopicStem Cell ResearchQuestionnairesFetal BloodYolk SacUterusTrophoblastsOperations ResearchPublishingData CollectionPregnancy Trimester, FirstSheepOrgan SpecificityPregnancy Complications, InfectiousReproducibility of ResultsInformation DisseminationUnited States Agency for Healthcare Research and QualityPolymerase Chain ReactionNeoplasmsResearcher-Subject RelationsTreatment OutcomeBibliometricsFetal ViabilityKidneyPatient Selection