781
We conclude that distinct sets of transcription factors are involved in the two modes of HLA-DRA expression , and that HMG I/Y may be important for B cell-specific expression , and is essential for IFN-gamma induction .
 ( DNA: HLA-DRA, None) , ( protein: HMG I/Y, None) , ( protein: transcription factors, None) , ( protein: IFN-gamma, 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:
 ( DNA: HLA-DRA, None) , ( protein: HMG I/Y, None) , ( protein: transcription factors, None) , ( protein: IFN-gamma, None) 