ZAP70 and B-cell chronic lymphocytic leukemia: In patients with CLL and EBV coinfection, EBV load correlated positively with LDH (r = 0.3743; p = 0.010; Figure 1A, B2M (r = 0.3954; p = 0.005; Figure 1B), and the percentages of CD19+ ZAP70+ cells (r = 0.3211; p = 0.020; Figure 1C).