tokens: This report provides the first demonstration that upon fusion with HeLa cells , the nuclear contents of B cell-expressed transcription factors are depleted within a few hours with kinetics that are as fast or faster than that of Ig gene extinction .
folded_tokens: this report provides the first demonstration that upon fusion with hela cells , the nuclear contents of b cell-expressed transcription factors are depleted within a few hours with kinetics that are as fast or faster than that of ig gene extinction .
labels: O O O O O O O O O O B-cell_line I-cell_line O O O O O B-protein_family_or_group I-protein_family_or_group B-protein_family_or_group I-protein_family_or_group O O O O O O O O O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O