tokens: A T cell-specific protein Neg-1 and a ubiquitous protein Neg-2 binding to NRE-I and NRE-II , respectively , were identified .
folded_tokens: a t cell-specific protein neg-1 and a ubiquitous protein neg-2 binding to nre-i and nre-ii , respectively , were identified .
labels: O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group B-protein_molecule O O B-protein_family_or_group I-protein_family_or_group B-protein_molecule O O B-DNA_domain_or_region O B-DNA_domain_or_region O O O O O O