8709
By isolating Daudi x HeLa heterokaryons a few hours after fusion, we have studied the initial fate of two B cell-specific transcription factors involved in Ig gene transcription , Oct-2 and NF-kappa B .
 ( cell line: Daudi x HeLa heterokaryons, None) , ( protein: NF-kappa B, None) , ( DNA: Ig gene, None) , ( protein: B cell-specific transcription factors, None) , ( DNA: Oct-2, 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:
 ( cell line: Daudi x HeLa heterokaryons, None) , ( protein: NF-kappa B, None) , ( DNA: Ig gene, None) , ( protein: B cell-specific transcription factors, None) , ( DNA: Oct-2, None) , ( protein: transcription factors, None) 