By immunohistochemistry , p50 protein was detected in the cytoplasm and nucleus of FDC , confirming the involvement of FDC .
by immunohistochemistry , p50 protein was detected in the cytoplasm and nucleus of fdc , confirming the involvement of fdc .
O B-other_name O B-protein_molecule O O O O O O O B-cell_component O B-cell_type O O O O O B-cell_type O