1753
When all three sites were present, a second complex "a" was detected, which contains an unknown member of the Ets family .
 ( protein: Ets family, 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: Ets family, None) 