4763
Thus, the balance between an endogenously produced viral inducer ( IL-1 beta ) and an inhibitor ( IL-1ra ) may represent an important pathway leading to modulation of HIV expression from monocytic cells .
 ( protein: endogenously produced viral inducer, None) , ( cell type: monocytic cells, None) , ( protein: IL-1ra, None) , ( protein: IL-1 beta, 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: endogenously produced viral inducer, None) , ( cell type: monocytic cells, None) , ( protein: IL-1ra, None) , ( protein: IL-1 beta, None) 