PSK References
    
        
        
            
        
            Chung CH, Go P, Chang KH. PSK immunotherapy in cancer patients--a preliminary report. Zhonghua Min Guo Wei Sheng Wu Ji Mian Yi Xue Za Zhi 1987;20(3):210-216. 
  Fisher M, Yang LX. Anticancer effects and mechanisms of polysaccharide-K (PSK): implications... 
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