tokens: To further understand its mechanism of action , we investigated the effects of HU on regulation of c-jun expression prior to the onset of erythroid differentiation of K562 cells .
folded_tokens: to further understand its mechanism of action , we investigated the effects of hu on regulation of c-jun expression prior to the onset of erythroid differentiation of k562 cells .
labels: O O O O O O O O O O O O O B-other_organic_compound O O O B-DNA_domain_or_region O O O O O O B-other_name I-other_name O B-cell_line I-cell_line O