3111
The IL-12 nonresponsiveness of the Th2 clones was further evident by the total lack of IL-12 -induced phosphorylation of STAT4 ( signal transducer and activator of transcription-4 ), a transcription factor that is typically involved in IL-12 signaling .
 ( protein: STAT4, None) , ( protein: IL-12, None) , ( protein: IL-12, None) , ( cell line: Th2 clones, None) , ( protein: IL-12, None) , ( protein: transcription factor, None) , ( protein: signal transducer and activator of transcription-4, 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: STAT4, None) , ( protein: IL-12, None) , ( protein: IL-12, None) , ( cell line: Th2 clones, None) , ( protein: IL-12, None) , ( protein: transcription factor, None) , ( protein: signal transducer and activator of transcription-4, None) 