13537
The Janus kinase-1-deficient cell line U4A expresses HLA-DR alpha mRNA in response to NK cell activation , and HLA-DR alpha promoter constructs transfected into these cells are induced by NK cells but not IFN-gamma .
 ( cell line: NK cells, None) , ( DNA: HLA-DR alpha promoter constructs, None) , ( protein: IFN-gamma, None) , ( RNA: HLA-DR alpha mRNA, None) , ( protein: HLA-DR alpha, None) , ( protein: HLA-DR alpha, None) , ( cell line: Janus kinase-1-deficient cell line U4A, None) , ( DNA: HLA-DR alpha promoter, 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:
 ( cell line: NK cells, None) , ( DNA: HLA-DR alpha promoter constructs, None) , ( protein: IFN-gamma, None) , ( RNA: HLA-DR alpha mRNA, None) , ( protein: HLA-DR alpha, None) , ( protein: HLA-DR alpha, None) , ( cell line: Janus kinase-1-deficient cell line U4A, None) , ( DNA: HLA-DR alpha promoter, None) 