“…For example, by spraying or inoculating leaves with CH, various plant species were protected against viruses such as, tobacco necrosis virus (TNV), peanut stunt virus (PSV), cucumber mosaic virus (CMC), potato virus X (PVX), and alfalfa mosaic virus (ALMV) 210,214,215 . The effectiveness of CH to inhibit viral infection depends on the concentration, deacetylation degree, and molecular weight of CH besides charge value and the character of the chemical modifications of the molecule 187,211,213 . In mammals, CH can stimulate the inductive phase of the immune response to virus antigens and nerves of the immune system.…”