Objective: To explore biological features of the immunity reconstitution after transplantation of mFasL cDNA gene modified transplantation of hematopoietic cells. Methods: FasL cDNA was transfected into BALB/C mouse hematopoietic cells by liposomes. The transfected cells were cultured together with BAC mouse bone marrow graft. The mixing bone marrow graft was injected into BALB/C mouse recipients after 60 Co r ray irradiating. The mortality, the mixing lymphocyte reaction of mouse recipients was o...