passages.id: split_8_test_1133_passage
passages.type: progene_text
passages.text: The identification of an agonist peptide ( YLSGADLNL , designated CAP1 - 6D ) to an immunodominant cytotoxic T - lymphocyte ( CTL ) epitope ( designated CAP1 ) of human carcinoembryonic antigen ( CEA ) has previously been reported .