ATG affects post-SCT T-cell immune reconstitution. (A) Comparison of CD3⁺ cell numbers, B-cell numbers, and NK-cell numbers for the 3 groups at 2 months post-SCT and 6 months post-SCT. (B) Logarithmic evaluation of CD3⁺, CD4⁺, and CD4⁺-naive cell counts for time post-SCT (months).