Bone MarrowBone Marrow CellsBone Marrow TransplantationBone and BonesFetusFetal Tissue TransplantationComplicityBone RemodelingBone Marrow DiseasesBone Marrow ExaminationAborted FetusBone Marrow NeoplasmsResearchHematopoietic Stem CellsBone DensityDirected Tissue DonationBone ResorptionPregnancyMaternal-Fetal ExchangeBone Marrow PurgingPlacentaLifeMice, Inbred C57BLCell DifferentiationHematopoiesisBone NeoplasmsPersonhoodTransplantation, HomologousBone DevelopmentCells, CulturedBeginning of Human LifeAbortion, VeterinaryBone DiseasesColony-Forming Units AssayBone RegenerationWhole-Body IrradiationTransplantation, AutologousTime FactorsSpleenRadiation ChimeraStromal CellsGraft vs Host DiseaseFetal ResearchAnemia, AplasticGestational AgeFlow CytometryOsteogenesisResearch Support as TopicLeukemiaLiverBone MatrixAcetonitrilesResearch DesignBone TransplantationTissue and Organ ProcurementAntigens, CD34GranulocytesTissue DistributionMolecular Sequence DataMice, Inbred BALB CEthics, ResearchRNA, MessengerOsteoblastsHematopoietic Stem Cell TransplantationOsteoclastsPregnancy, AnimalResearch PersonnelImmunohistochemistryTransplantation ChimeraThymus GlandMice, KnockoutMultiple MyelomaCivil RightsCell SeparationAntibodies, MonoclonalStem CellsBase SequencePancytopeniaLeukemia, Myeloid, AcuteDisease Models, AnimalBone SubstitutesCell LineagePolymerase Chain ReactionFetal BloodNontherapeutic Human ExperimentationTherapeutic Human ExperimentationTissue DonorsBone Diseases, MetabolicMice, TransgenicMegakaryocytesT-LymphocytesFemurNursing ResearchImmunophenotypingGraft SurvivalMyelodysplastic SyndromesOrgan TransplantationPregnant WomenAbortion, InducedReverse Transcriptase Polymerase Chain Reaction