Taken together, these five adoptive transfer experiments demonstrated that animals which received BMLF1-specific CD8+ T cells prior to WT EBV infection were less likely to develop high blood viremia (defined as greater than 3×103 EBV/ml) at three weeks post WT EBV infection: only 3 animals out of 14 (21%) developed high viremia after BMLF1-specific T cell transfer as compared to 6 out of 14 (43%) after LMP2-specific T cell transfer or 7 out of 16 (44%) animals in the non-treated group (Figure 5E). Here, PSMB9 is linked to Epstein-Barr virus infection.