tokens: Retroviral mediated transfer and expression of exogenous genes in primary lymphoid cells : assaying for a viral transactivator activity in normal and malignant cells .
folded_tokens: retroviral mediated transfer and expression of exogenous genes in primary lymphoid cells : assaying for a viral transactivator activity in normal and malignant cells .
labels: B-other_name I-other_name I-other_name O O O B-DNA_family_or_group I-DNA_family_or_group O B-cell_type I-cell_type I-cell_type O O O O B-other_name B-protein_family_or_group O O O O O O O