tokens: Thus , a complete understanding of how T cells recognize the SL3 core remains to be elucidated .
folded_tokens: thus , a complete understanding of how t cells recognize the sl3 core remains to be elucidated .
labels: O O O O O O O B-cell_type I-cell_type O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O