Kaplan-Meier estimates of numerical immune reconstitution.

(A) Cumulative probability of time to achieve an age-appropriate normal cell count for CD3⁺/CD4⁺ cells (dotted line), CD3⁺/CD8⁺ cells (dashed line), and CD4⁺–CD8⁺ ratio (solid line). Median time for CD4 and CD8 cell recovery was 12 and 9 months, respectively. (B) Cumulative probability of time to achieve an age-appropriate normal cell count for CD19⁺ cells (solid line) and NK (CD56⁺) cells (dashed line). Median time for CD19 and NK cell recovery was 6 and 2 months, respectively.