Serial analysis of peripheral blood T cells in 8 evaluable patients with PTLD treated with decreasing immunosuppression and acyclovir.

Freshly collected PBMCs were analyzed for the presence of T cells by flow cytometry. Analyses were performed at multiple time points for each patient. (A) Absolute CD3⁺ T cells per microliter. (B) Absolute CD8⁺/CD3⁺ T cells per microliter.