Polysaccharide Peptide

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Polysaccharide peptide (PSP) is a protein-bound polysaccharide extracted from the edible mushroom, Coriolus versicolor. PSP is currently in the animal-testing phase of research in many countries for use as an anti-tumor drug. It appears to work as a Biological Response Modifier, enhancing the bodies own use of macrophages and T-lymphocytes, rather than directly attacking any tumors.

http://psp-research.com/