14933
These observations indicate that expression of Egr-1 is essential for and restricts differentiation of myeloblasts along the macrophage lineage .
 ( cell type: myeloblasts, None) , ( cell type: macrophage lineage, None) , ( protein: Egr-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:
 ( cell type: myeloblasts, None) , ( cell type: macrophage lineage, None) , ( protein: Egr-1, None) 