Shown is the recovery of CD3⁺ T cells in adults (upper) versus children (lower) after unrelated SBA⁻E⁻ BMT. T-cell recovery is further divided between unrelated transplant recipient patients with (•) or without GVHD (○). The stippled rectangle denotes the 10th-90th% CD3 values of 65 normal adults. The horizontal bar represents the median of patients studied within each time period.