5200
The results suggest that PYBF and the pyrimidine-rich region upstream from HBD can specifically enhance HBB transcription in adult erythroid cells .
 ( protein: PYBF, None) , ( DNA: HBB, None) , ( DNA: HBD, None) , ( cell type: adult erythroid cells, None) , ( DNA: pyrimidine-rich region, 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: PYBF, None) , ( DNA: HBB, None) , ( DNA: HBD, None) , ( cell type: adult erythroid cells, None) , ( DNA: pyrimidine-rich region, None) 