FetusFetal Tissue TransplantationComplicityAborted FetusDirected Tissue DonationMaternal-Fetal ExchangePlacentaPregnancyLifePersonhoodAbortion, VeterinaryBeginning of Human LifeGestational Agealpha 1-AntitrypsinFetal ResearchPregnancy, AnimalCivil RightsReceptors, Adrenergic, alphaPregnant WomenHypoxia-Inducible Factor 1, alpha SubunitAbortion, InducedAmniotic FluidLiverBrain Tissue TransplantationBase SequenceTherapeutic Human ExperimentationExtraembryonic MembranesTissue DistributionMolecular Sequence DataNontherapeutic Human ExperimentationFetal DiseasesFetal ResorptionHydrops FetalisEmbryonic and Fetal DevelopmentSocial Control, Formalalpha7 Nicotinic Acetylcholine ReceptorFetal WeightFetal DeathAbortion, LegalIntegrin alpha3beta1Ethics, MedicalChorionic VilliRNA, MessengerIntegrin alpha4Integrin alpha6Placenta DiseasesIntegrin alpha5beta1Moral ObligationsUterusFetal DevelopmentAdvisory CommitteesIntegrin alpha4beta1TrophoblastsYolk SacInterleukin-1alphaOrgan SpecificityImmunohistochemistryCloning, MolecularIntegrin alpha2beta1Receptors, Adrenergic, alpha-1Integrin alpha5Integrin alpha1beta1Gene ExpressionFetal BloodAmino Acid SequenceSheepFederal GovernmentGene Expression RegulationReceptors, Adrenergic, alpha-2Integrin alpha6beta1KidneyPregnancy Trimester, FirstDNA, ComplementaryPolymerase Chain ReactionCattleBrainIntegrin alpha6beta4Pregnancy Complications, InfectiousBlotting, NorthernAntibodies, MonoclonalIntegrin alpha ChainsFetal ViabilityIntegrinsGene Expression Regulation, DevelopmentalEmbryo, MammalianIntegrin alpha1Reverse Transcriptase Polymerase Chain ReactionKineticsTranscription FactorsDNAAlpha RhythmMice, Inbred C57BLIntegrin alpha3Cell DifferentiationGenomic ImprintingPrenatal Diagnosisalpha 1-Antitrypsin DeficiencyProtein BindingTranscription, GeneticCells, Cultured