tokens: The results obtained suggest that two Ad12 E1A domains are required to induce resistance of the cell lines to NK cells .
folded_tokens: the results obtained suggest that two ad12 e1a domains are required to induce resistance of the cell lines to nk cells .
labels: O O O O O O B-DNA_domain_or_region B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O B-cell_line I-cell_line O B-cell_type I-cell_type O