By comparison , PMA is a very inefficient inducer of the jun gene family in Jurkat cells .
by comparison , pma is a very inefficient inducer of the jun gene family in jurkat cells .
O O O B-other_organic_compound O O O O O O O B-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group O B-cell_line I-cell_line O