T Cells Recognizing Leukemic CD34 + Progenitor Cells Mediate the Antileukemic Effect of Donor Lymphocyte Infusions for Relapsed Chronic Myeloid Leukemia after Allogeneic Stem Cell Transplantation - Smit, Willem M.; Rijnbeek, Marion; Fibbe, Willem E.; Willemze, Roel (Proceedings of the National Academy of Sciences of the United States of America, 1998)