tokens: We show that the expression of four cell genes , cdc-2 , cyclin E , CD23 , and cyclin D2 , are up-regulated approximately 100-fold as a result of EBV -mediated immortalization .
folded_tokens: we show that the expression of four cell genes , cdc-2 , cyclin e , cd23 , and cyclin d2 , are up-regulated approximately 100-fold as a result of ebv -mediated immortalization .
labels: O O O O O O O B-DNA_family_or_group I-DNA_family_or_group O B-DNA_domain_or_region O B-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O O O B-virus O O O