To investigate the ability of EBV-specific Abs against p18, p47/54 and EBNA-1 in addition to gp350/220 to mediate NK cell function over the course of infection, NK cell degranulation was detected by measurement of CD107a (Fig 5A) and MIP-1β (Fig 5B) expression post immune complex stimulation. This evidence concerns the gene LAMP1 and infection.