tokens: Previous transfection studies of HIV LTR constructs linked to the chloramphenicol acetyltransferase gene indicated that multiple regulatory regions including the enhancer , SP1 , TATA and TAR regions were important for HIV gene expression .
folded_tokens: previous transfection studies of hiv ltr constructs linked to the chloramphenicol acetyltransferase gene indicated that multiple regulatory regions including the enhancer , sp1 , tata and tar regions were important for hiv gene expression .
labels: O O O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O B-DNA_molecule I-DNA_molecule I-DNA_molecule O O O B-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region O B-DNA_domain_or_region O B-DNA_domain_or_region O B-DNA_domain_or_region I-DNA_domain_or_region O O O B-other_name I-other_name I-other_name O