1. Patients with high risk hematological malignancies, including those with induction failure and after treated or untreated relapse. High risk hematological malignancies include: Acute myelogenous or lymphocytic leukemia with induction failure of after relapse, myelodysplastic syndrome of intermediate and high risk according to Greenberg criteria, chronic myelogenous leukemia in accelerated phase or blast crisis, non-Hodgkin's and Hodgkin's lymphoma with induction failure or relapse after chemotherapy and refractory or relapsed chronic lymphocytic leukemia.