Figure 1

Phylogenetic tree of individual BARF1 gene variants at the nucleotide level (A) and at the amino acid level (B). AIDS: Acquired immune deficiency syndrome; PTLD: post-transplant lymphoproliferative disorder; IM: infectious mononucleosis; BL: Burkitt's lymphoma; NPC-NL: NPC from The Netherlands (Dutch NPC); NHL: non-Hodgkin lymphoma. The scale reflects the evolutionary distance.