FIG. 2.

Quantitation of EBV DNA by real-time PCR. DNA was extracted from PBMNC obtained from patients with symptomatic EBV infections or control patients without EBV-related diseases. Two hundred fifty nanograms of DNA was used for the real-time PCR assay, and the EBV DNA copy numbers per microgram of DNA are shown. Multiple samples for some patients were tested because repeated evaluations were needed. Bars show the means and standard deviations for each group. The dotted line shows the detection limit of the assay.