2420
Cells treated with 5 nM D3 showed little response, but differentiated maximally with 5 nM D3 and 10 nM RA .
 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:
 None