5610
Because STAT6 activation is essential for IL-4 -induced gene expression , we examined the ability of type I and type II IFNs to regulate activation of STAT6 by IL-4 in primary human monocytes .
 ( protein: IFNs, None) , ( protein: IL-4, None) , ( cell type: primary human monocytes, None) , ( protein: STAT6, None) , ( protein: IL-4, None) , ( protein: STAT6, None) , ( cell type: human monocytes, 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-4, None) , ( cell type: primary human monocytes, None) , ( protein: STAT6, None) , ( protein: IL-4, None) , ( protein: STAT6, None) , ( cell type: human monocytes, None) 