Immune reconstitution kinetics posttransplant. Mean CD3⁺ cells (A), mean CD4⁺ cells (B), mean CD19 cells (C), mean CD8 cells (D), mean activated T cells (E), and mean NK cells (F) were measured at different time points posttransplant. Disease controls (n = 36) included patients who were transplanted for SCID (n = 10), CD40 ligand deficiency (n = 2), Wiskott-Aldrich syndrome (n = 7), chronic granulomatous disease (n = 13), and other PID (n = 4; 1 NK deficiency, 1 inducible costimulator deficiency, 1 hemophagocytic lymphohistiocytosis, 1 combined immunodeficiency). *P = .06, **P < .05.