Previous studies also showed that 1) peripheral blood HSCT aided rapid recovery of hematopoietic function, and reduced rate of infection, 2) G-CSF mobilized bone marrow and peripheral blood are an enriched source of stem cells which can be used to facilitate the implantation of allogeneic HSCs, and reduce the incidence of GVHD, and 3) umbilical cord MSCs increase the implantation rate, are readily available, and have a potent proliferative capacity [10], [11]. The gene discussed is CSF3; the disease is graft versus host disease.