Graft rejection after HCT.

Example of graft rejection after HCT, showing neutrophil and platelet changes in patient SU2000 with CML. Initial engraftment and subsequent rejection between 2 and 3 months were documented by chimerism studies (bottom panel). ▴, CD3⁺; ■, polymorphonuclear leukocytes (PMNs); ●, bone marrow (BM).