5687
In one model, polymorphisms within IL-4 regulatory elements might result in overexpression of the gene, amplifying Th2 cell differentiation and class switching to IgE .
 ( protein: IgE, None) , ( DNA: IL-4 regulatory elements, None) , ( cell line: Th2 cell, 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: IgE, None) , ( DNA: IL-4 regulatory elements, None) , ( cell line: Th2 cell, None) , ( protein: IL-4, None) 