tokens: Immunoelectron microscopy revealed LANDs to be globular , electron-dense structures morphologically distinct from the annular structures characteristic of PML NBs .
folded_tokens: immunoelectron microscopy revealed lands to be globular , electron-dense structures morphologically distinct from the annular structures characteristic of pml nbs .
labels: B-other_name I-other_name O B-cell_component O O O O O O O O O O O O O O B-cell_component I-cell_component O