12673
However, restimulation of human Th2 lines and clones in the presence of IFN-alpha does not induce the production of IFN-gamma .
 ( protein: IFN-gamma, None) , ( protein: IFN-alpha, None) , ( cell line: human Th2 lines, 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: IFN-gamma, None) , ( protein: IFN-alpha, None) , ( cell line: human Th2 lines, None) 