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A, Development of CD4 + CD25 high Treg cell during 120 postoperative days. Due to completely different behaviour between the groups, there is no statistical difference, but the only constant ascending trend after withdrawal of immunosuppression can be seen in the WBI group. B, Donor cell chimerism in peripheral blood. The only group where donor cells seem to proliferate and a mixed chimerism is maintained is the WBI group.
