4721
Transient expression of the luciferase reporter gene linked to serially deleted sequences of the 5'-flanking region of the IL-9 gene has revealed several positive and negative regulatory elements involved in the basal and inducible expression of the IL-9 gene in C5MJ2 cells .
 ( DNA: negative regulatory elements, None) , ( protein: IL-9, None) , ( cell line: C5MJ2 cells, None) , ( protein: IL-9, None) , ( DNA: IL-9 gene, None) , ( DNA: IL-9 gene, None) , ( DNA: luciferase reporter gene, None) , ( DNA: 5#$%#-flanking region, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: negative regulatory elements, None) , ( protein: IL-9, None) , ( cell line: C5MJ2 cells, None) , ( protein: IL-9, None) , ( DNA: IL-9 gene, None) , ( DNA: IL-9 gene, None) , ( DNA: luciferase reporter gene, None) , ( DNA: 5#$%#-flanking region, None) 