In addition to NB4 cells , ATRA also activated IRF-1 gene expression in HL-60 , U937 , and THP-1 cells , which all respond to ATRA by growth inhibition .
in addition to nb4 cells , atra also activated irf-1 gene expression in hl-60 , u937 , and thp-1 cells , which all respond to atra by growth inhibition .
O O O O O O B-other_organic_compound O O B-DNA_domain_or_region I-DNA_domain_or_region O O B-cell_line O B-cell_line O O B-cell_line I-cell_line O O O O O B-other_organic_compound O B-other_name I-other_name O