Fetusalpha-FetoproteinsFetal ProteinsFetal Tissue TransplantationComplicityAborted FetusDirected Tissue DonationMaternal-Fetal ExchangePlacentaLifePregnancyPersonhoodAbortion, VeterinaryBeginning of Human LifeGestational AgeFetal ResearchPregnancy, AnimalCivil RightsReticulocytesPregnant WomenAbortion, InducedAmniotic FluidBrain Tissue TransplantationTherapeutic Human ExperimentationExtraembryonic MembranesNontherapeutic Human ExperimentationFetal DiseasesFetal ResorptionHydrops FetalisLiverTissue DistributionSocial Control, FormalRNA, MessengerFetal WeightEmbryonic and Fetal DevelopmentMolecular Sequence DataFetal DeathAbortion, LegalEthics, MedicalChorionic VilliPlacenta DiseasesMoral ObligationsAdvisory CommitteesBase SequenceFetal DevelopmentYolk SacTrophoblastsProtein BiosynthesisFederal GovernmentUterusCell-Free SystemFetal BloodPregnancy Trimester, FirstAmino Acid SequenceOrgan SpecificityPregnancy Complications, InfectiousSheepRabbitsFetal ViabilityCloning, MolecularGenomic ImprintingPrenatal DiagnosisEndotoxinsMoralsAntigens, NeoplasmKidneyImmunohistochemistryAmnionEmbryo, MammalianProteinsGene Expression Regulation, DevelopmentalBrainPolymerase Chain ReactionMolecular WeightDNA, ComplementaryCells, CulturedCell LineCattleAntibodies, MonoclonalTissue and Organ ProcurementBlotting, NorthernDNA ProbesHorseshoe CrabsGene ExpressionMaternal ExposureResource AllocationCell ExtractsTrisomyAbortion, SpontaneousLungHorsesGovernment RegulationDNAHorse DiseasesMosaicismUmbilical CordInformed ConsentFetal Growth RetardationPregnancy Trimester, SecondDigestive System