6139
STAT3 ( signal transducer and activator of transcription 3 ) is a latent transcription factor that is activated by tyrosine phosphorylation ( Tyr-705 ) in cells stimulated with cytokines or growth factors .
 ( protein: signal transducer and activator of transcription 3, None) , ( protein: growth factors, None) , ( protein: cytokines, None) , ( protein: STAT3, 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: signal transducer and activator of transcription 3, None) , ( protein: growth factors, None) , ( protein: cytokines, None) , ( protein: STAT3, None) 