10577
To isolate cDNA clones that dominantly inhibit the DNA-binding activity of Oct-2 , chosen as a representative factor , we have developed a novel screening system .
 ( protein: Oct-2, 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: Oct-2, None) 