In FL , follicles were densely populated , and their borders were irregular , with some Bcl-6 + cells in the interfollicular zones .
in fl , follicles were densely populated , and their borders were irregular , with some bcl-6 + cells in the interfollicular zones .
O O O O O O O O O O O O O O O O B-protein_molecule O O O O B-tissue I-tissue O