VCAM1 and deltaretrovirus infections: Genes highly expressed in both cell lines, like VCAM1 which is implicated in the formation of syncitia during HTLV infection [56], or the anti-apoptotic protein BIRC3/HIAP-1/CIAP-2 that prevents the death of naturally infected HTLV-1 CD8+ are easily visualized with this representation [57].