2415
All-trans retinoic acid and 1 alpha,25-dihydroxyvitamin D3 co-operate to promote differentiation of the human promyeloid leukemia cell line HL60 to monocytes .
 ( cell type: monocytes, None) , ( cell line: human promyeloid leukemia cell line, None) , ( cell line: HL60, 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: monocytes, None) , ( cell line: human promyeloid leukemia cell line, None) , ( cell line: HL60, None) 