11862
We have used a somatic cell hybridization approach to genetically analyse regulation of the activity of the IgH 3' enhancer .
 ( DNA: IgH 3#$%# enhancer, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: IgH 3#$%# enhancer, None) 