7668
Because STAT6 activation plays an essential role in IL-4 / IL-13 -induced gene expression , the ability of IFN-beta and IFN-gamma to inhibit STAT6 activity provides an explanation for how IFNs can suppress IL-4 / IL-13 -inducible gene expression .
 ( protein: IFNs, None) , ( protein: IL-13, None) , ( protein: IFN-gamma, None) , ( protein: IL-13, None) , ( protein: STAT6, None) , ( protein: IL-4, None) , ( protein: STAT6, None) , ( protein: IFN-beta, None) , ( protein: IL-4, 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: IFNs, None) , ( protein: IL-13, None) , ( protein: IFN-gamma, None) , ( protein: IL-13, None) , ( protein: STAT6, None) , ( protein: IL-4, None) , ( protein: STAT6, None) , ( protein: IFN-beta, None) , ( protein: IL-4, None) 