7458
The cell type-specific activation of STAT3 by IFN-gamma was also observed in neutrophils that are differentiated in vitro from human CD34+ hematopoietic stem cells .
 ( protein: STAT3, None) , ( cell type: human CD34+ hematopoietic stem cells, None) , ( protein: IFN-gamma, None) , ( cell type: neutrophils, 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: STAT3, None) , ( cell type: human CD34+ hematopoietic stem cells, None) , ( protein: IFN-gamma, None) , ( cell type: neutrophils, None) 