1273
Immature thymocytes were infected by EBV , as determined by the internalization of the viral genome and its transcriptional activity .
 ( DNA: viral genome, None) , ( cell type: thymocytes, 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:
 ( DNA: viral genome, None) , ( cell type: thymocytes, None) 