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Because the elevated Myb:Maf status seen in differentiating cells can be recapitulated by overexpression of c-Maf in myeloid cell lines, we inducibly expressed the c-Maf cDNA in 2 bipotent human myeloid progenitor cells .
 ( protein: Myb:Maf, None) , ( DNA: c-Maf cDNA, None) , ( cell type: differentiating cells, None) , ( cell type: human myeloid progenitor cells, None) , ( protein: c-Maf, None) , ( protein: c-Maf, 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: Myb:Maf, None) , ( DNA: c-Maf cDNA, None) , ( cell type: differentiating cells, None) , ( cell type: human myeloid progenitor cells, None) , ( protein: c-Maf, None) , ( protein: c-Maf, None) 