3021
The level of SP140 mRNA in myeloid precursor cell lines HL60 and NB4 markedly increased in response to chemically induced cellular differentiation.
 NB4, SP140 mRNA, myeloid precursor cell lines, HL60
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 NB4, SP140 mRNA, myeloid precursor cell lines, HL60