Patent ID: 7560114

Claim:
A method for modulating an immune response in an organism in need thereof comprising administering to said organism an effective amount of a purified extract from Ganoderma lucidum comprising a polysaccharide or glycopeptide component having a terminal fucose residue with α1,2-fucosidic linkages, wherein said purified extract is obtained by the method comprising: homogenizing a tissue of Ganoderma lucidum ; extracting the homogenized tissue with aqueous alkaline solution to form a crude extract; and subjecting the crude extract to gel filtration chromatography to form one or more fractions buffered at a pH of about 7, the one or more fractions comprising said polysaccharide or glycopeptides component having terminal fucose residues with α1,2-fucosidic linkages; wherein the purified extract comprises at least one of the fractions.