7792
We examined chemokine gene expression following the differentiation of a monocyte , macrophage cell lineage .
 ( cell type: monocyte, None) , ( cell line: macrophage cell lineage, None) , ( protein: chemokine, None) , ( cell type: macrophage, 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: monocyte, None) , ( cell line: macrophage cell lineage, None) , ( protein: chemokine, None) , ( cell type: macrophage, None) 