12724
The tissular patterns of CIITA and MHC class II gene expression are tightly correlated: CIITA mRNA is highly expressed in B cells , and is induced by interferon gamma ( IFN-gamma ) in macrophage and epithelial cell lines .
 ( RNA: CIITA mRNA, None) , ( protein: IFN-gamma, None) , ( protein: interferon gamma, None) , ( cell type: B cells, 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:
 ( RNA: CIITA mRNA, None) , ( protein: IFN-gamma, None) , ( protein: interferon gamma, None) , ( cell type: B cells, None) 