P. linteus is a basidiomycete fungus, distributed across China, Korea and Japan and reported to work as a 'miracle medicine', prolonging longevity. Identified by Ikekawa as having the highest anti-tumor activity of the Hymenomycetes1 (a fungal grouping containing the major medicinal mushrooms), it has been heavily researched in the last decade, especially in Korea, showing broad immunostimulant activity, strong anti-cancer properties and the ability to enhance the efficacy of existing chemotherapeutic drugs2.