9614
PU.1/Pip and basic helix loop helix zipper transcription factors interact with binding sites in the CD20 promoter to help confer lineage- and stage-specific expression of CD20 in B lymphocytes .
 ( protein: basic helix loop helix zipper transcription factors, None) , ( DNA: CD20 promoter, None) , ( protein: PU.1/Pip, None) , ( protein: CD20, None) , ( DNA: binding sites, None) , ( cell type: B lymphocytes, None) , ( protein: transcription factors, 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: basic helix loop helix zipper transcription factors, None) , ( DNA: CD20 promoter, None) , ( protein: PU.1/Pip, None) , ( protein: CD20, None) , ( DNA: binding sites, None) , ( cell type: B lymphocytes, None) , ( protein: transcription factors, None) 