7312
In this study we show evidence that STAT3 is a transcription factor whose activity is modulated by H2O2 in human lymphocytes , in which endogenous catalase had previously been inhibited.
 ( protein: catalase, None) , ( cell type: human lymphocytes, None) , ( protein: STAT3, None) , ( protein: transcription factor, 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: catalase, None) , ( cell type: human lymphocytes, None) , ( protein: STAT3, None) , ( protein: transcription factor, None) 