Signature cytokines have been reported for different latencies of EBV (10), and the EBV-positive (EBV+) BL cell line and LCLs produce an array of cytokines at various levels, including interleukin-6 (IL-6), IL-8, IL-10, monocyte chemoattractant protein 1 (MCP-1), macrophage-derived chemokine (MDC), tumor necrosis factor alpha (TNF-??),