Figure 2: The anti-viral properties of natural milk protein: lactoferrin is demonstrated in the figure 2 where lactoferrin binds to gp120 protein of HIV and prevents attachment of HIV to target cells; lactoferrin also binds to the target site of rotavirus (RV) present on the intestinal epithelial cells and blocks the attachment of the RV to the target. Lactoferrin is found to bind to the envelope proteins (E1 and E2) present on the HCV surface and modify them in such a way that the HCV fails to attach to its receptors on the target cells.