Xenogeneic bone marrow transplantation ( xbmt ) may will be a practicable treatment to some severe specific disease , such as aids , hepatitis and so on . the object of this experiment is to prevent graft versus host disease ( gvhd ) in xbmt 本实验的目的是想解决其首当其冲的障碍,即克服异种骨髓移植间强烈的移植物抗宿主病( gvhd ) 。