Fungi Perfecti, Host Defense, Shiitake Extract, Immune Support, 2 fl oz (60 ml)Made with US Grown, Triple Extracted Mushrooms Dietary Supplement USDA Certified by the Washington State Department of Agriculture From the Forest, to our Farm, to You About the Founder Paul Stamets believes in the power of Mycelium, the network of thread like cells that produces mushrooms. Paul wants everyone to share in the benefits from the Host Defense line of products. Mentored by the greatest mycologists of our time, he integrates and expands