Figure 2.

Sensitivity assays. Namalwa cells (2 EBV genome per cell) were serially diluted in the EBV-negative cells of Ramos cell line. PCR results showed that the method is able to detect 1 EBV genome in a background of 5 × 10³ (first reaction) (A) and 1 × 10⁴ negative cells (nested PCR) (B). 2.5% agarose gel stained with ethidium bromide.