tokens: The element is not activated upon infection of established EBV -negative B-cell lines , indicating that EBV fails to drive these cells to a fully lymphoblastoid phenotype .
folded_tokens: the element is not activated upon infection of established ebv -negative b-cell lines , indicating that ebv fails to drive these cells to a fully lymphoblastoid phenotype .
labels: O O O O O O O O O B-virus O O O O O O B-virus O O O O O O O O B-cell_type I-cell_type O