OUTLINE: This is a dose escalation study. Patients receive CD34+ stem cell augmented donor bone marrow on day 0 on another protocol. Patients then receive interleukin-2 (IL-2) subcutaneously on day 30. Treatment continues for 12 weeks in the absence of dose limiting toxicity. Cohorts of 4 patients receive escalating doses of IL-2 until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose prior to that which causes at least grade 3 toxicity.