Box-and-whisker plots of EBV DNA copy number by diagnosis and disease status. (A) EBV DNA copy number in plasma for patients with or without EBV⁺ diseases. (B) EBV DNA copy number in PBMCs for patients with or without EBV⁺ diseases. (C) Comparison of EBV DNA copy numbers in plasma of patients with PTLD, lymphoma, and HLH, by disease status and EBV status. (D) Comparison of EBV DNA copy numbers in PBMCs of patients with PTLD, lymphoma, and HLH, by disease status and EBV status. For all graphs, individual copy numbers (dots), median (line), 25th to 75th percentile (box), and range (whiskers) are shown for each patient group.