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This effect is independent of differentiation and is mediated by RAR alpha in HL-60 cells , suggesting a similar role for RAR alpha in CD38 expression in other hematopoietic cells .
 hematopoietic cells, RAR alpha, HL-60 cells, RAR alpha, CD38
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:
 hematopoietic cells, RAR alpha, HL-60 cells, RAR alpha, CD38