2093
Interestingly, all of those events were largely indirect and mediated by endogenously secreted tumor necrosis factor alpha ( TNF alpha ), as they were strongly inhibited by a neutralizing anti- TNF alpha monoclonal antibody .
 ( protein: TNF alpha, None) , ( protein: tumor necrosis factor alpha, None) , ( protein: TNF alpha, None) , ( protein: neutralizing anti- TNF alpha monoclonal antibody, 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: TNF alpha, None) , ( protein: tumor necrosis factor alpha, None) , ( protein: TNF alpha, None) , ( protein: neutralizing anti- TNF alpha monoclonal antibody, None) 