5209
Spi-B is an Ets transcription factor related to the oncoprotein Spi-1/PU.1 and highly expressed in B lymphoid cells .
 ( protein: oncoprotein, None) , ( protein: Spi-1/PU.1, None) , ( cell type: B lymphoid cells, None) , ( protein: Ets transcription factor, None) , ( protein: transcription factor, None) , ( protein: Spi-B, 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: oncoprotein, None) , ( protein: Spi-1/PU.1, None) , ( cell type: B lymphoid cells, None) , ( protein: Ets transcription factor, None) , ( protein: transcription factor, None) , ( protein: Spi-B, None) 