The bursa of Fabricius is a gut-associated lymphoid organ that is essential for the generation of a diversified B cell repertoire in the chicken .
the bursa of fabricius is a gut-associated lymphoid organ that is essential for the generation of a diversified b cell repertoire in the chicken .
O B-body_part I-body_part I-body_part O O B-body_part I-body_part I-body_part O O O O O O O O O B-cell_type I-cell_type I-cell_type O O B-multi_cell O