tokens: The P sequence does not share homology with the 5' upstream sequence of the IL-2 gene , even though surrounding sequences of the IL-4 gene share high homology with the IL-2 gene .
folded_tokens: the p sequence does not share homology with the 5' upstream sequence of the il-2 gene , even though surrounding sequences of the il-4 gene share high homology with the il-2 gene .
labels: O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O