ALT profiles after BMT in children who had normal (○) or abnormal (•) values before transplant. The number of cases observed in the two groups is indicated at the following intervals: −7.0, 30, and 60 days; 1, 3, 6, and 9 years from BMT. Day 0 = day of marrow infusion. *Dotted line shows the ALT upper normal value (=42 IU/L).