HCMV infection and T-cell immunity reconstitution. Probability of developing an HCMV infection (A), of reconstituting HCMV-specific CD4⁺ (B) and CD8⁺ (C) T-cell immunity (ie, corresponding to a specific T-cell number > 0.4 cells/μL blood), and of restoring LPR to HCMV (D) in the 2 groups of HCMV-seropositive (R⁺) and -seronegative (R^–) HSCT recipients.