Fig. 2: Overview of anti-viral immunity.

B B-cell, CTL cytotoxic T-cell, IFN interferon, Ig immunoglobulin, IL interleukin, MHC major histocompatibility class, NFκB nuclear factor kappa-light-chain-enhancer of activated B cells, NK natural killer cell, Th helper T-cell, TLR toll-like receptor, TNF tumour necrosis factor. Taken from ref. [1].