Stem CellsFetusChimerismHematopoietic Stem CellsFetomaternal TransfusionFetal Stem CellsMaternal-Fetal ExchangeCell DifferentiationStem Cell TransplantationFetal ResearchPregnancyFetal Tissue TransplantationAdult Stem CellsEmbryonic Stem CellsNeural Stem CellsComplicityCells, CulturedCell LineageAntigens, CD34Hematopoietic Stem Cell TransplantationAborted FetusMultipotent Stem CellsPrenatal DiagnosisFetal BloodStem Cell NichePluripotent Stem CellsBone Marrow CellsResearchPlacentaStem Cell FactorColony-Forming Units AssayCell ProliferationCell SeparationMesenchymal Stromal CellsInduced Pluripotent Stem CellsHematopoiesisMice, Inbred C57BLMyeloid Progenitor CellsFlow CytometryDirected Tissue DonationMesenchymal Stem Cell TransplantationErythroblastsHematopoietic Stem Cell MobilizationErythroid Precursor CellsGene Expression Regulation, DevelopmentalGestational AgeMice, TransgenicLifeRegenerationChimeraAmniotic FluidGreen Fluorescent ProteinsPersonhoodTrophoblastsImmunohistochemistryNeoplastic Stem CellsBone MarrowCell Culture TechniquesEndothelial CellsNeurogenesisBeginning of Human LifeEmbryo, MammalianCell MovementNestinSignal TransductionIn Situ Hybridization, FluorescenceAbortion, VeterinaryPolymerase Chain ReactionStem Cell ResearchBlood CellsNeuronsCell LineCell DivisionRNA, MessengerGranulocyte Colony-Stimulating FactorCell CountBiological MarkersLiverProto-Oncogene Proteins c-kitAntigens, CDReverse Transcriptase Polymerase Chain ReactionY ChromosomeHomeodomain ProteinsSex Determination AnalysisTime FactorsLymphoid Progenitor CellsPhenotypeTransplantation, AutologousBlood Cell CountTranscription FactorsPlant StemsCell SurvivalMice, KnockoutMice, SCIDPregnancy Trimester, FirstResearch Support as TopicCloning, OrganismGene Expression RegulationChemokine CXCL12Oligodendroglia