Myco-Polysaccharides: "Some mushrooms and other fungal entities have possible immunomodulatory activities and possible other health benefits. It is thought these health benefits are mainly due to polysaccharides and polysaccharide-protein complexes, which comprise the cell walls of these organisms. The principal bioactive substances are believed to be the beta-D-glucans. Beta-D-glucans, usually called beta-glucans, are nondigestible polysaccharides found in nature in such sources as cereal grains, including oats and barley, as well as in yeast, bacteria, algae and mushrooms."