4370
The IFN -dependent increase in RAR(alpha) levels and the enhancing effect of the cytokine on retinoid -dependent granulocytic markers expression may be a characteristic of PML-RAR positive cells , since the phenomena are not observed in HL-60 promyelocytes .
 PML-RAR positive cells, HL-60 promyelocytes, IFN, cytokine, RAR(alpha), PML-RAR, retinoid -dependent granulocytic markers
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:
 PML-RAR positive cells, HL-60 promyelocytes, IFN, cytokine, RAR(alpha), PML-RAR, retinoid -dependent granulocytic markers