3021
The level of SP140 mRNA in myeloid precursor cell lines HL60 and NB4 markedly increased in response to chemically induced cellular differentiation.
 ( cell line: NB4, None) , ( RNA: SP140 mRNA, None) , ( cell line: myeloid precursor cell lines, 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 line: NB4, None) , ( RNA: SP140 mRNA, None) , ( cell line: myeloid precursor cell lines, None) , ( cell line: HL60, None) 