Fig. 1.

Follow-up of hematopoietic chimerism by STR-PCR and indel-qPCR in HSCT patients. The percentage of recipient chimerism determined by indel-qPCR and STR-PCR in samples taken after HSCT is shown for three representative patients with a long record of available samples (2, 4, and 5). The reappearance of blast cells in bone-marrow and/or peripheral blood samples (cytological relapse) and time-points of therapeutic interventions are indicated in the graph and the time scale, respectively. AML = Acute myeloid leukemia; ALL = acute lymphoblastic leukemia; MM = multiple myeloma; NHL = non-Hodgkin's lymphoma; STR = short-tandem-repeat; indel = micro insertion/deletion polymorphism; RL = relapse; HSCT = hematopoietic stem cell transplantation.