tokens: However , this region directed extremely low reporter mRNA levels relative to endogenous IL-4 mRNA , suggesting that full gene activity requires additional enhancer elements .
folded_tokens: however , this region directed extremely low reporter mrna levels relative to endogenous il-4 mrna , suggesting that full gene activity requires additional enhancer elements .
labels: O O O O O O O O O O O O O B-protein_molecule O O O O O O O O O B-DNA_family_or_group I-DNA_family_or_group O