11860
Regulation of immunoglobulin heavy chain (IgH) gene expression is controlled by a B cell-specific promoter , intronic enhancer and additional B cell-specific enhancer elements identified recently in the 3' end of the IgH locus .
 ( DNA: intronic enhancer, None) , ( DNA: B cell-specific promoter, None) , ( DNA: IgH locus, None) , ( DNA: immunoglobulin heavy chain (IgH) gene, None) , ( DNA: B cell-specific enhancer elements, 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: intronic enhancer, None) , ( DNA: B cell-specific promoter, None) , ( DNA: IgH locus, None) , ( DNA: immunoglobulin heavy chain (IgH) gene, None) , ( DNA: B cell-specific enhancer elements, None) 