Fig. 2

Recovery of lymphocyte fractions (CD3⁺ (solid black), CD4⁺ (solid thick gray), CD8⁺ (solid thin gray), CD19⁺ (dotted gray), and CD56⁺ (dotted black)) (a) and serum levels of immunoglobulins (b) in the long-term follow-up period. The total level of IgG (solid black) has been maintained at more than 500 mg/dL without supplementation and has gradually increased. IgA (dotted gray) and IgM (solid gray) have been gradually increasing to normal ranges, with a marked increase being observed in IgM