KLRC1 and hematologic disorder: To provide an overview of NKG2A, NKG2C and NKG2D up-regulation in different HSCT settings, on different immune effectors, in different hematologic malignancies, at different times post-transplant, and relative to engraftment, we have immunophenotyped both CD8 and CD56 lymphocytes from the peripheral blood of two series of representative recipients of HLA-matched allogeneic (n = 7) and autologous (n = 5) grafts.