tokens: The bcl-2 gene , a repressor of lymphocyte death , is perhaps the best understood of the programmed cell death associated genes .
folded_tokens: the bcl-2 gene , a repressor of lymphocyte death , is perhaps the best understood of the programmed cell death associated genes .
labels: O B-DNA_domain_or_region I-DNA_domain_or_region O O O O B-cell_type O O O O O O O O O B-other_name I-other_name I-other_name O O O