This article represents the second in a series of invited annual reports from the International Bone Marrow Transplant Registry (IBMTR) published in Experimental Hematology. In the first report, the results of IBMTR analyses for the two-year period 1 January 1982 through 31 December 1983 were described. In this report, data are presented reflecting the phenomenal recent growth in the field of bone marrow transplantation. Also presented are summaries of the results of IBMTR analyses during the period 1 January through 31 December 1984.
