tokens: BZLF1 mRNA and the product , an immediate-early gene for EBV replication , was not expressed in any of them , thereby suggesting that the tumour cells carried EBV genomes in a tightly latent form .
folded_tokens: bzlf1 mrna and the product , an immediate-early gene for ebv replication , was not expressed in any of them , thereby suggesting that the tumour cells carried ebv genomes in a tightly latent form .
labels: B-RNA_molecule I-RNA_molecule O O O O O B-DNA_family_or_group I-DNA_family_or_group O B-virus O O O O O O O O O O O O O O B-cell_type I-cell_type O B-virus O O O O O O O