10390
IFN-gamma-primed lung fibroblasts costimulate T lymphocyte proliferation utilizing CD40 , but not the well-studied costimulatory molecules B7-1 and B7-2 .
 ( cell type: fibroblasts, None) , ( protein: B7-2, None) , ( protein: CD40, None) , ( protein: costimulatory molecules, None) , ( cell line: IFN-gamma-primed lung fibroblasts, None) , ( protein: B7-1, 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 type: fibroblasts, None) , ( protein: B7-2, None) , ( protein: CD40, None) , ( protein: costimulatory molecules, None) , ( cell line: IFN-gamma-primed lung fibroblasts, None) , ( protein: B7-1, None) 