tokens: Thus , the substitution of the underlined A residue to a C within the GGGATTTCACC motif abolishes its T cell-restricted activity and leads to its functioning in both El4 cells and HeLa cells .
folded_tokens: thus , the substitution of the underlined a residue to a c within the gggatttcacc motif abolishes its t cell-restricted activity and leads to its functioning in both el4 cells and hela cells .
labels: O O O B-other_name O O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O B-other_name I-other_name I-other_name O O O O O O O B-cell_line I-cell_line O B-cell_line I-cell_line O