14872
Restriction enzyme analysis followed by Southern blot hybridization identified a significant increase in the fused fragment encompassing both ends of EBV DNA .
 ( DNA: EBV DNA, 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: EBV DNA, None) 