Bone MarrowBone Marrow CellsBone Marrow TransplantationBone and BonesBone RemodelingBone Marrow DiseasesBone Marrow ExaminationBone Marrow NeoplasmsHematopoietic Stem CellsBone DensityBone ResorptionBone Marrow PurgingHematopoiesisBone NeoplasmsTransplantation, HomologousMice, Inbred C57BLBone DevelopmentCell DifferentiationColony-Forming Units AssayBone DiseasesCells, CulturedBone RegenerationTransplantation, AutologousWhole-Body IrradiationRadiation ChimeraStromal CellsGraft vs Host DiseaseAnemia, AplasticFlow CytometryOsteogenesisLeukemiaBone MatrixBone TransplantationAntigens, CD34SpleenGranulocytesTime FactorsOsteoblasts