1120
Thus, failure of virus-exposed T cells to produce Fos and Jun could contribute to the increase in illness due to influenza virus in the elderly .
 ( protein: Fos, None) , ( cell type: T cells, None) , ( cell type: virus-exposed T cells, None) , ( protein: Jun, 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: Fos, None) , ( cell type: T cells, None) , ( cell type: virus-exposed T cells, None) , ( protein: Jun, None) 