7763
The I gamma 3 ECS lies upstream of the major I gamma 3 transcription initiation site and displays more than 90% identity with the corresponding human I gamma 1 , I gamma 2 , and I gamma 4 regions.
 ( DNA: ECS, None) , ( DNA: major I gamma 3 transcription initiation site, None) , ( protein: I gamma 3, None) , ( DNA: human I gamma 1, None) , ( DNA: I gamma 4, None) , ( DNA: I gamma 2, None) , ( protein: I gamma 3, 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: ECS, None) , ( DNA: major I gamma 3 transcription initiation site, None) , ( protein: I gamma 3, None) , ( DNA: human I gamma 1, None) , ( DNA: I gamma 4, None) , ( DNA: I gamma 2, None) , ( protein: I gamma 3, None) 