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Acellular DermisTissue TransplantationBrain Tissue TransplantationNursing ResearchEvidence-Based NursingFetusFetal Tissue TransplantationBiomedical ResearchHematopoietic Stem Cell TransplantationComplicityTransplantation, HomologousAborted FetusResearchSiblingsTransplantation ConditioningDirected Tissue DonationReproducibility of ResultsTransplantation, AutologousMaternal-Fetal ExchangeHistocompatibility TestingPregnancyPlacentaLifeGraft vs Host DiseasePersonhoodBeginning of Human LifeAbortion, VeterinaryTreatment OutcomeDisease-Free SurvivalSurvival AnalysisRetrospective StudiesKidney TransplantationResearch Support as TopicFetal ResearchRecurrenceGestational AgeResearch DesignEthics, ResearchResearch PersonnelCivil RightsPregnancy, AnimalNontherapeutic Human ExperimentationTherapeutic Human ExperimentationPregnant WomenTransplantsAbortion, InducedAmniotic FluidEthics, MedicalGraft RejectionExtraembryonic MembranesTranslational Medical ResearchHealth Services ResearchLiverFetal DiseasesTissue and Organ ProcurementSocial Control, FormalFetal ResorptionHydrops FetalisTissue DistributionGenetic ResearchMoral ObligationsGraft SurvivalImmunosuppressive AgentsAdvisory CommitteesFetal WeightInformed ConsentEmbryonic and Fetal DevelopmentFetal DeathTime FactorsHeart TransplantationAbortion, LegalTissue DonorsTransplantationFederal GovernmentChorionic VilliPlacenta DiseasesFetal DevelopmentUnited StatesClinical Nursing ResearchLung TransplantationFetal BloodYolk SacRNA, MessengerKidneyUterusMolecular Sequence DataTrophoblastsDental ResearchMoralsCommunity-Based Participatory ResearchBehavioral ResearchPregnancy Trimester, FirstPregnancy Complications, InfectiousQualitative ResearchGovernment RegulationBase SequenceOrgan SpecificityBrainSheepFetal Viability