12135
The peroxisome proliferator-activated receptor (PPARalpha) transcription factor is expressed in HL-60 cells , but no changes were observed in its expression upon HL-60 cell differentiation .
 ( protein: transcription factor, None) , ( cell line: HL-60 cells, 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 factor, None) , ( cell line: HL-60 cells, None) 