4927
Differentiation of T-helper lymphocytes : selective regulation by members of the STAT family of transcription factors .
 ( protein: transcription factors, None) , ( protein: STAT family, None) , ( cell type: T-helper lymphocytes, 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: transcription factors, None) , ( protein: STAT family, None) , ( cell type: T-helper lymphocytes, None) 