9844
Spi-1/ PU.1 is a myeloid- and B-cell specific transcription factor which is also involved in Friend virus -induced murine erythroleukemia .
 ( protein: Spi-1/ PU.1, None) , ( protein: myeloid- and B-cell specific transcription factor, None) , ( protein: PU.1, None) , ( protein: transcription factor, 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: Spi-1/ PU.1, None) , ( protein: myeloid- and B-cell specific transcription factor, None) , ( protein: PU.1, None) , ( protein: transcription factor, None) 