8885
Promoter sequence , exon:intron structure , and synteny of genetic location show that a chicken cytokine with T-cell proliferative activity is IL2 and not IL15 .
 ( protein: IL2, None) , ( protein: IL15, None) , ( DNA: Promoter sequence, None) , ( protein: chicken cytokine, None) , ( DNA: exon:intron structure, 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: IL2, None) , ( protein: IL15, None) , ( DNA: Promoter sequence, None) , ( protein: chicken cytokine, None) , ( DNA: exon:intron structure, None) 