9084
We previously reported that dexamethasone ( DEX ), a synthetic glucocorticoid , causes apoptosis in mature Th cell lines , and that this induction of cell death is prevented by specific cytokines , namely, by IL-2 in Th1 cells and by IL-4 in Th2 cells .
 ( protein: IL-4, None) , ( protein: IL-2, None) , ( cell line: mature Th cell lines, None) , ( cell type: Th1 cells, None) , ( cell type: Th2 cells, None) , ( protein: cytokines, 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: IL-4, None) , ( protein: IL-2, None) , ( cell line: mature Th cell lines, None) , ( cell type: Th1 cells, None) , ( cell type: Th2 cells, None) , ( protein: cytokines, None) 