13821
Gel-shift assays revealed that transcriptional factor (s) induced only in response to IL-13 treatment of human peripheral blood monocytes bind to the 15-LO promoter DNA .
 ( protein: 15-LO, None) , ( cell type: human peripheral blood monocytes, None) , ( protein: IL-13, None) , ( protein: transcriptional factor, None) , ( DNA: 15-LO promoter DNA, 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: 15-LO, None) , ( cell type: human peripheral blood monocytes, None) , ( protein: IL-13, None) , ( protein: transcriptional factor, None) , ( DNA: 15-LO promoter DNA, None) 