8. Continued from #7: Patients requiring >/= 1 mg/kg prednisone for GVHD management at the time of screening will not be eligible until the prednisone can be weaned to <1 mg/kg. Such patients should be monitored for at least 14 days and if no flare of GVHD requiring re-escalation of steroids or additional interventions for the GVHD they will be eligible.