tokens: DC can develop in mutant mice lacking mature T cells , provided the common precursors are present .
folded_tokens: dc can develop in mutant mice lacking mature t cells , provided the common precursors are present .
labels: B-cell_type O O O B-other_artificial_source I-other_artificial_source O B-cell_type B-cell_type I-cell_type O O O O O O O O