1) 1.- Patients in remission with ALL, CLL, AML, CML, MDS will be allowed to participate in this program if their platelet count is >150K, and the hemoglobin level is at least 8.0g/dl. The patient will receive their autologous platelets cryopreserved in ThromboSol or the fresh random platelets (FRP) whenever the need for such transfusions is determined to be clinically indicated by their physician(s).