8903
It was found that mixture of heparin with IFN-gamma inhibited up-regulation of the signal transducer and activator of transcription protein, STAT-1 produced normally by treatment of endothelial cells with IFN-gamma .
 ( protein: STAT-1, None) , ( protein: IFN-gamma, None) , ( cell type: endothelial cells, 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:
 ( protein: STAT-1, None) , ( protein: IFN-gamma, None) , ( cell type: endothelial cells, None) , ( protein: IFN-gamma, None) 