In lymphoblastoid cell lines , which exemplify an intermediate stage of B-cell differentiation , a reduced expression and activity were observed .
in lymphoblastoid cell lines , which exemplify an intermediate stage of b-cell differentiation , a reduced expression and activity were observed .
O B-cell_line I-cell_line I-cell_line O O O O O O O B-other_name B-other_name O O O B-other_name O O O O O