7900
EBNA2 -dependent transcriptional induction of the IFN-beta promoter occurred in EBV-negative Burkitt's lymphoma cells , indicating that other EBV genes were not required for the induction of IFN-beta synthesis .
 ( cell line: EBV-negative Burkitt#$%#s lymphoma cells, None) , ( protein: IFN-beta, None) , ( DNA: IFN-beta promoter, None) , ( protein: EBNA2, None) , ( DNA: EBV genes, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( cell line: EBV-negative Burkitt#$%#s lymphoma cells, None) , ( protein: IFN-beta, None) , ( DNA: IFN-beta promoter, None) , ( protein: EBNA2, None) , ( DNA: EBV genes, None) 