8599
Finally, mutations in the EBF binding sites diminished B29 promoter activity in pre-B cells while the same mutations did not have as striking an effect on the promoter function in B-cell lines of later differentiation stages.
 ( DNA: B29 promoter, None) , ( protein: EBF, None) , ( cell line: B-cell lines, None) , ( cell type: pre-B cells, None) , ( DNA: B29, 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: B29 promoter, None) , ( protein: EBF, None) , ( cell line: B-cell lines, None) , ( cell type: pre-B cells, None) , ( DNA: B29, None) 