14943
Gel-shift analysis in the presence of EBNA2 specific monoclonal antibodies revealed that EBNA2 is a component of the third complex.
 ( protein: EBNA2, None) , ( protein: EBNA2 specific monoclonal antibodies, None) , ( protein: EBNA2, 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: EBNA2, None) , ( protein: EBNA2 specific monoclonal antibodies, None) , ( protein: EBNA2, None) 