Maitake mushrooms have long been prized in Japan for their medicinal properties. For maintaining immunity and healing a variety of acute conditions, maitake mushrooms are highly versatile and highly effective. Even more powerful healing is the maitake-based superimmune product, formulated and patented by Dr. Hiroaki Nanba of Japan's Kobe Pharmaceutical University, MaitakeGold 404. MaitakeGold 404 fights cancer by protecting healthy cells from becoming cancerous, helping prevent metastasis of cancer from one area of the body to another, slowing or stopping growth of tumors, ameliorating side effects of chemotherapy, while boosting its positive effects.