ERVW-1 and Epstein-Barr virus infection: EBV infection of B cells requires envelope proteins gp350, gH, gL, gB and gp42, whereas EBV infection of epithelial cells requires envelope proteins BMFR2, gH, gL and gB, therefore these envelope proteins could be excellent EBV prophylactic vaccine candidates [(7, 25–27, 33), Table 1].