7823
CD40 expression could be enhanced in CD40 -positive MM by stimulation with IFN-gamma and tumor necrosis factor-alpha but not by interleukin (IL)-1beta or CD40 triggering .
 ( protein: tumor necrosis factor-alpha, None) , ( protein: CD40, None) , ( protein: CD40, None) , ( protein: IFN-gamma, None) , ( protein: interleukin (IL)-1beta, None) , ( protein: CD40, 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: tumor necrosis factor-alpha, None) , ( protein: CD40, None) , ( protein: CD40, None) , ( protein: IFN-gamma, None) , ( protein: interleukin (IL)-1beta, None) , ( protein: CD40, None) 