1534
Tumor necrosis factor alpha ( TNF alpha ) is particularly important in this process because of its ability to regulate other inflammatory mediators in an autocrine and paracrine fashion .
 ( protein: TNF alpha, None) , ( protein: Tumor necrosis factor alpha, 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) 