12783
Although interleukin (IL)-12 was originally purified from an Epstein-Barr ( EBV )-transformed B cell line and the high correlation of EBV infection and IL-12 expression has been suggested, no study has reported whether EBV infection is directly linked to IL-12 expression .
 ( protein: interleukin (IL)-12, None) , ( protein: IL-12, None) , ( cell line: Epstein-Barr ( EBV )-transformed B cell line, None) , ( protein: IL-12, 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:
 ( protein: interleukin (IL)-12, None) , ( protein: IL-12, None) , ( cell line: Epstein-Barr ( EBV )-transformed B cell line, None) , ( protein: IL-12, None) 