Patent ID: 7682615

Claim:
An isolated, aqueous liquid immune stimulating composition comprising a mixture of polysaccharides comprising the monosaccharide units galactose, mannose and glucose, wherein: the majority of the polysaccharides of the composition have a molecular weight of at least 1,000 Da wherein a first part of said polysaccharides have a molecular weight of less than 1,000,000 Da, wherein a second part of said polysaccharides have a molecular weight of at least 1,000,000 Da, wherein said mixture of polysaccharides comprises the monosaccharides galactose, mannose and glucose in the ratio 1:0.033 to 500:1 to 50, and wherein the composition is produced by a method comprising the steps of; a) cultivating a fungus of the genus Lentinus in a liquid growth medium under appropriate conditions to provide a suitable chemical and physical environment supporting the growth of a fungus of the genus Lentinus in the liquid growth medium, b) isolating the composition from said liquid growth medium by one or more size fractionation steps, and c) retaining said composition for further use.