1163
CONCLUSIONS: In the present work, we show that human fetal and adult erythroid progenitors are distinct in their transcription factors , and that the commitment to fetal or adult program occurs at a very early differentiation stage.
 ( 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:
 ( protein: transcription factors, None) 