A 9-residue human leukocyte antigen (HLA)-restricted fragment of carcinoembryonic antigen (CEA). CEA:571-579 peptide, which has the amino acid sequence YLSGANLNL, may elicit a cytotoxic T lymphocyte (CTL) immune response against tumors expressing CEA. Check for active clinical trials using this agent. (NCI Thesaurus)

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