tokens: LIF increased steady-state levels of HIV mRNA at 2 . 0 , 4 . 3 , and 9 . 2 kB .
folded_tokens: lif increased steady-state levels of hiv mrna at 2 . 0 , 4 . 3 , and 9 . 2 kb .
labels: B-protein_molecule O O O O B-RNA_family_or_group I-RNA_family_or_group O O O O O O O O O O O O O O O