tokens: Additionally , Nef expressing cells were transiently transfected with a plasmid in which HIV-1 AP-1 DNA recognition sequences were cloned downstream of the chloramphenicol acetyltransferase ( CAT ) gene .
folded_tokens: additionally , nef expressing cells were transiently transfected with a plasmid in which hiv-1 ap-1 dna recognition sequences were cloned downstream of the chloramphenicol acetyltransferase ( cat ) gene .
labels: O O B-protein_family_or_group O O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O B-protein_molecule I-protein_molecule O B-protein_molecule O O O