Two binding proteins are detected in K562 nuclear extracts , while only one is found in extracts from HeLa cells .
two binding proteins are detected in k562 nuclear extracts , while only one is found in extracts from hela cells .
O O O O O O B-cell_component B-cell_component I-cell_component O O O O O O O B-other_name O B-cell_line I-cell_line O