tokens: The system described here may serve as a model for studying the the essential genes for differentiation of normal bone marrow cells .
folded_tokens: the system described here may serve as a model for studying the the essential genes for differentiation of normal bone marrow cells .
labels: O O O O O O O O O O O O O B-DNA_family_or_group I-DNA_family_or_group O B-other_name O B-cell_type B-tissue I-tissue O O