2817
Taken together, these results provide a new aspect to our knowledge of monocyte differentiation and provide evidence that human monocytes are flexible in their differentiation potential and are precursors not only of macrophages but also of CD1+relB+DC and TRAP-positive MGC .
 ( cell type: human monocytes, None) , ( cell type: macrophages, None) , ( cell type: TRAP-positive MGC, None) , ( cell type: monocytes, None) , ( cell type: CD1+relB+DC, 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: human monocytes, None) , ( cell type: macrophages, None) , ( cell type: TRAP-positive MGC, None) , ( cell type: monocytes, None) , ( cell type: CD1+relB+DC, None) 