674
Utilizing a IFN-gamma activation site-like DNA sequence element located upstream of the I epsilon exon , we demonstrated by gel mobility shift assays that IL-4 induced a binding activity in the cytosol and nucleus of BL-2 cells .
 ( DNA: IFN-gamma activation site-like DNA sequence element, None) , ( DNA: I epsilon exon, None) , ( protein: IL-4, None) , ( cell line: BL-2 cells, 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:
 ( DNA: IFN-gamma activation site-like DNA sequence element, None) , ( DNA: I epsilon exon, None) , ( protein: IL-4, None) , ( cell line: BL-2 cells, None) 