3891
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.
 ( RNA: BZLF1 mRNA, None) , ( cell type: tumour cells, None) , ( DNA: immediate-early gene, None) , ( DNA: EBV genomes, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( RNA: BZLF1 mRNA, None) , ( cell type: tumour cells, None) , ( DNA: immediate-early gene, None) , ( DNA: EBV genomes, None) 