tokens: In germinal centers GC , p50 , p52 , and RelB were found in the nuclei of FDC only and were not detected in the nuclei of CD68+ cells .
folded_tokens: in germinal centers gc , p50 , p52 , and relb were found in the nuclei of fdc only and were not detected in the nuclei of cd68+ cells .
labels: O B-tissue I-tissue B-tissue O B-protein_subunit O B-protein_subunit O O B-protein_molecule O O O O B-cell_component O B-cell_type O O O O O O O B-cell_component O B-cell_line I-cell_line O