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Furthermore, HL-60 cells transduced with a bcl-2 expression vector showed the same differentiation response to retinoids as did parental HL-60 cells even though apoptosis was inhibited in these bcl-2-transduced cells , suggesting that differentiation and apoptosis are regulated independently in myeloid leukemic cells .
 bcl-2-transduced cells, parental HL-60 cells, HL-60 cells, myeloid leukemic cells, HL-60 cells, bcl-2 expression vector
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:
 bcl-2-transduced cells, parental HL-60 cells, HL-60 cells, myeloid leukemic cells, HL-60 cells, bcl-2 expression vector