7157
In conclusion, production of a Th1 cytokine , IFN-gamma , by HBsAg -reactive cells was associated with hepatocyte damage in chronic hepatitis B , while no counteracting effect of Th2 cytokines produced by those cells was observed.
 ( protein: Th1 cytokine, None) , ( protein: cytokines, None) , ( protein: Th2 cytokines, None) , ( protein: IFN-gamma, None) , ( protein: HBsAg, 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: Th1 cytokine, None) , ( protein: cytokines, None) , ( protein: Th2 cytokines, None) , ( protein: IFN-gamma, None) , ( protein: HBsAg, None) 