11633
Inhibitor (IK) of IFN-gamma induced HLA class II antigens expression also inhibits HLA class II constitutive expression in the human Raji B cell line .
 ( protein: HLA class II antigens, None) , ( protein: IFN-gamma, None) , ( protein: HLA class II, None) , ( cell line: human Raji B cell line, 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: HLA class II antigens, None) , ( protein: IFN-gamma, None) , ( protein: HLA class II, None) , ( cell line: human Raji B cell line, None) 