One hundred and six patients with standard risk leukaemia were given fractionated TBI prior to allogeneic (72 cases, 27 of whom were T-depleted) or autologous (34 cases) bone marrow transplantation (BMT). Disease free survival at 5 years is 68% for allogeneic non T-depleted BMT and 33% for T-depleted BMT. Deaths are related to relapse, GVHD, infections, pneumonitis, encephalitis, VOD, AIDS, rejection.