4、ximalCFU-MK,MNC,CD41+cellsnumberisatday10,18and18.ThenumberofCFU-MK,MNC,CD41+cellsexpanded6.8,4.8and44foldrespectively.Atday18,50%~74%maturemegakaryocytescanbeidentifiedbymorphologyinthenucleatedcells.94%~96%ofthemegakaryocytesaregranularmegakaryocytesandthrombocytogenousmegakaryocytes.Conclusion In