tokens: The tax gene product of the type I human T-cell leukemia virus ( HTLV-I ) transactivates interleukin-2 ( IL-2 ) gene through activation of an enhancer termed CD28 responsive element ( CD28RE ) .
folded_tokens: the tax gene product of the type i human t-cell leukemia virus ( htlv-i ) transactivates interleukin-2 ( il-2 ) gene through activation of an enhancer termed cd28 responsive element ( cd28re ) .
labels: O O O O O O B-virus I-virus I-virus I-virus I-virus I-virus O B-virus O O B-DNA_domain_or_region I-DNA_domain_or_region B-protein_molecule O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region O O