Sugar cane extract (SCE)-treated pigs show a significant enhancement of natural killer cytotoxicity, lymphocyte proliferation, phagocytic function of monocytes, and interferon-gamma (IFN-γ) production of CD4+ and gammadelta T cells compared with the controls after pseudorabies virus (PRV) infection, which may be extensively applied in field for the prevention of infections (105). Here, IFNG is linked to infection.