2282
It plays an important role in modulating the balance of T helper (Th) cell subsets , favoring expansion of the Th2 lineage relative to Th1 .
 ( cell type: Th1, None) , ( cell type: T helper (Th) cell subsets, None) , ( cell type: Th2 lineage, 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: Th1, None) , ( cell type: T helper (Th) cell subsets, None) , ( cell type: Th2 lineage, None) 