tokens: None of 33 PBMC specimens from healthy adults and only one of 40 pediatric samples was positive ( at a low level ) for adenovirus DNA by nested PCR assay .
folded_tokens: none of 33 pbmc specimens from healthy adults and only one of 40 pediatric samples was positive ( at a low level ) for adenovirus dna by nested pcr assay .
labels: O O O B-cell_type O O B-multi_cell I-multi_cell O O O O O B-other_name I-other_name O O O O O O O O O B-DNA_family_or_group I-DNA_family_or_group O B-other_name B-other_name O O