Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is the only curative therapy for hematopoietic malignancies. The graft-derived donor lymphocytes are capable of eliminating the residual recipient malignant cells in the course of allogeneic immune response, thus decreasing the chances of a relapse of the disease. Foreign peptides of the recipient presented by the MHC molecules are able to elicit the immune response immunologically.
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