ChimerismFetomaternal TransfusionFetusFetal Stem CellsFetal ResearchMaternal-Fetal ExchangePrenatal DiagnosisPregnancyErythroblastsSex Determination AnalysisChimeraIn Situ Hybridization, FluorescenceY ChromosomeFetal BloodTrophoblastsChromosomes, Human, YCloning, OrganismFetal HemoglobinAmniotic FluidGenes, sryPlacentaPregnancy Trimester, FirstPolymerase Chain ReactionGreen Fluorescent ProteinsCell SeparationGestational AgeRh-Hr Blood-Group SystemBlood CellsCells, CulturedStem CellsKaryotypingAneuploidyErythroid Precursor CellsDNAScleroderma, SystemicBlood Cell CountFlow CytometryCell DifferentiationChromosome AberrationsFibroblastsAutoimmune DiseasesPregnancy ComplicationsMice, TransgenicAntigens, CD34LiverMice, Inbred C57BLSensitivity and SpecificityLungModels, AnimalImmunohistochemistryBiological MarkersCell MovementRNA, MessengerCell Line