 1. Patients less than or equal to 75 years old with lymphoid pre-B, B, T, non B-, non T, or Burkitt if bone marrow blasts 20 or acute myeloid leukemia M0 to M7 or myelodysplastic syndrome and with: Disease that has entered remission with chemotherapy andor bone marrow transplantation, but is considered to be at high risk of relapse. or Primary, or relapsed treatment-refractory disease who, at the time of reinjection of the tumor vaccine, are at a state of complete or partial cytological remission disease 20 blasts infiltrating the bone marrow after a secondhigher line of conventional andor high dose chemotherapy. 