BCL2L11 and disease arising from reactivation of latent virus: Using six sets of primer pairs (indicated as A–F in Figure 2) for amplification and real-time Q PCR analysis of various loci in the Bim promoter/CpG-island, it is clear that latent infection of both BL31 and BL41 with EBV is accompanied by a significant increase in H3K27-Me3 throughout most of the region.