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A cancer vaccine comprised of multiple synthetic breast cancer peptides and the adjuvant tetanus toxoid helper peptide emulsified in the adjuvant Montanide ISA-51 with immunopotentiation activity. Vaccination with this cancer vaccine may elicit a specific cytotoxic T-lymphocyte response against breast cancer cells. Synthetic breast cancer peptides may stimulate the immune response against cells that produce breast cancer markers such as erbB2 (HER2/neu) while tetanus toxoid helper peptide binds to class II MHC molecules as a nonspecific vaccine helper epitope, resulting in a long-term immunopotentiation by increasing the helper T-cell response. Montanide ISA-51, also known as incomplete Freund\'s adjuvant or IFA, is a stabilized water-in-oil emulsion adjuvant containing mineral oil with mannide oleate added as a surfactant that non-specifically stimulates cell-mediated immune responses to antigens. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C61076\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C61076\' NCI Thesaurus)
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