8775
Because Egr-1 mRNA and protein levels were observed to increase significantly before induction of elk-1 expression , we propose that Egr-1 is important for the regulation of elk-1 transcription in differentiating monocytes .
 ( DNA: elk-1, None) , ( RNA: Egr-1 mRNA, None) , ( protein: Egr-1, None) , ( cell type: monocytes, None) , ( DNA: elk-1, 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:
 ( DNA: elk-1, None) , ( RNA: Egr-1 mRNA, None) , ( protein: Egr-1, None) , ( cell type: monocytes, None) , ( DNA: elk-1, None) 