14930
The Egr-1 gene was observed to be transcriptionally silent in HL-60 cells , but active in U-937 and M1 cells , the latter two being predetermined for macrophage differentiation.
 ( cell line: HL-60 cells, None) , ( DNA: Egr-1 gene, None) , ( cell line: M1 cells, None) , ( cell line: U-937, 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:
 ( cell line: HL-60 cells, None) , ( DNA: Egr-1 gene, None) , ( cell line: M1 cells, None) , ( cell line: U-937, None) 