[Competitive effect of PSK against the immunosuppressive effect induced in the sera of mice bearing syngeneic tumors].


PSK is a protein-bound polysaccharide prepared from cultured mycelium of Coriolus versicolor. The appearance of an immunosuppressive effect in sera of tumor-bearing mice and its elimination by oral administration of PSK were investigated using an in vitro assay of blastoid transformation of normal spleen cells in response to PHA. (1) An inhibitory effect… (More)


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