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An insoluble fraction isolated from the bacterium Corynebacterium granulosum with potential cancer immunotherapeutic activity. As a non-specific immunostimulant, Corynebacterium granulosum P40 activates the reticulo-endothelial system; induces the production of certain cytokines; enhances macrophage activity; and potentiates a delayed-type hypersensitivity response when co-administered with an antigen. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C990\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C990\' NCI Thesaurus)
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