tokens: For example , in experiments involving proviral clones with LTRs containing one or two NF-kappa B elements ( and no Sp1 binding sites ) , a hierarchy of cellular permissivity to virus replication ( peripheral blood lymphocytes = MT4 greater than H9 greater than CEM greater than Jurkat ) was observed .
folded_tokens: for example , in experiments involving proviral clones with ltrs containing one or two nf-kappa b elements ( and no sp1 binding sites ) , a hierarchy of cellular permissivity to virus replication ( peripheral blood lymphocytes = mt4 greater than h9 greater than cem greater than jurkat ) was observed .
labels: O O O O O O B-virus I-virus O B-DNA_domain_or_region O O O O B-protein_molecule I-protein_molecule O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O B-other_name I-other_name O B-other_name I-other_name O B-cell_type I-cell_type B-cell_type O B-cell_line O O B-cell_line O O B-cell_line O O B-cell_line O O O O