About the FounderPaul Stamets believes in the power of Mycelium, the network of thread-like cells that produces mushrooms. Mentored by the greatest mycologists of our time, he integrates and expands upon the knowledge of our ancestors. Host Defense Maitake uses activated, freeze-dried, Certified Organic mycelium and fruitbodies, with a full spectrum of constituents: polysaccharides (beta glucans, arabinoxylane, glucose, xylose, galactose and mannose), glycoproteins, ergosterols, triterpenoids and other myco-nutrients, which are essential for Supporting Natural Immunity. The Source Full Spectrum of Active Constituents Grown & Processed in the USA Purity Assured Freeze Dried to Preserve Nutrients Bioavailable, Heat Activated Optimized, Peak Life Cycle Selection P Value Certified for Maximum Growth From the Forest, to our Farm, to You Host Defense MaitakeFound growing in termperate hardwood forests, Maitake has been the subject of studies worldwide and is known for supporting normal cell growth. Containing 1,3,1,4 and 1,6 beta-D glucans, Maitake is a delicious, edible species, with a long history of traditional use.