tokens: The levels of c-jun mRNA was elevated 4 to 7 . 5-fold by HU within 2 h .
folded_tokens: the levels of c-jun mrna was elevated 4 to 7 . 5-fold by hu within 2 h .
labels: O O O B-DNA_domain_or_region O O O O O O O O O B-other_organic_compound O O O O