3243
When the promoter region was linked with a heterologous reporter gene , we found that the promoter region is inducible by both interferons ( interferon -alpha and -gamma ) and interferon regulatory factor 1 .
 ( DNA: promoter region, None) , ( DNA: heterologous reporter gene, None) , ( DNA: promoter region, None) , ( protein: interferon regulatory factor 1, None) , ( protein: interferons, 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: promoter region, None) , ( DNA: heterologous reporter gene, None) , ( DNA: promoter region, None) , ( protein: interferon regulatory factor 1, None) , ( protein: interferons, None) 