Bcl6 mutation was found in 13 of 24 ( 54% ) clones from the germinal centre but only in 1 of 24 ( 4% ) clones from the naive B cells of the mantle zone .
bcl6 mutation was found in 13 of 24 ( 54% ) clones from the germinal centre but only in 1 of 24 ( 4% ) clones from the naive b cells of the mantle zone .
O O O O O O O O O O O O O O B-tissue I-tissue O O O O O O O O O O O O B-cell_type B-cell_type I-cell_type O O B-tissue I-tissue O