Results:All mice in ATBM group, CD25 group and CD4/CD25 groups survived until 60 days without any GVHD symptoms, while all mice in CD4 group died in 10 days from GVHD.

• 所有5只CD25组小鼠于骨髓移植后60天仍全部存活；无明显GVHD发生(P>0.；05); 同样；所有6只CD4/CD25组小鼠至骨髓移植后仍全部存活；无明显GVHD发生(P>0