7699
STAT1 , which is activated in response to many lymphocyte-activating cytokines including the interferons , is essential for cell-mediated immunity , as the absence of this protein is associated with prominent defects in the ability to control viral infections .
 ( protein: STAT1, None) , ( protein: lymphocyte-activating cytokines, None) , ( protein: interferons, 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: STAT1, None) , ( protein: lymphocyte-activating cytokines, None) , ( protein: interferons, None) 