11332
IL-4 is secreted by activated Th2 but not Th1 cells and plays a major role in the immune response by modulating the differentiation of naive Th cells toward the Th2 phenotype .
 ( cell type: Th2 phenotype, None) , ( cell type: Th1 cells, None) , ( protein: IL-4, None) , ( cell type: naive Th cells, None) , ( cell type: Th2, 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:
 ( cell type: Th2 phenotype, None) , ( cell type: Th1 cells, None) , ( protein: IL-4, None) , ( cell type: naive Th cells, None) , ( cell type: Th2, None) 