7446
Because extinction of IL-12 signaling in early Th2 development could potentially be important in imprinting a more permanent Th2 phenotype on a population of T cells , we have also examined various parameters regulating the IL-12 signaling pathway .
 ( cell type: T cells, None) , ( protein: IL-12, None) , ( protein: IL-12, 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: T cells, None) , ( protein: IL-12, None) , ( protein: IL-12, None) 