NCI Drug Dictionary
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immunological adjuvant OPT-821
A purified, natural saponin isolated from the soapbark tree Quillaja saponaria Molina with potential immunoadjuvant activity. When co-administered with vaccine peptides, OPT-821 may increase the antibody and cytotoxic T-cell responses against the targeted antigen(s). Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)