High Quality Content by WIKIPEDIA articles Lentinan is a beta-glucan with a glycosidic β-1,3: β-1,6 linkage. It is an anti-tumor polysaccharide from the shiitake (Lentinula edodes) mushroom. Lentinan is a polysaccharide that has a molecular weight of approximately 500,000 Da. The Japanese pharmaceutical company Ajinomoto developed Lentinan, which is an intravenously administered anti-cancer agent