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Here, we intend to demonstrate the requirement of GATA-1 and NF-E2 transcription factors in the BA -induced erythroid differentiation of human leukemic K562 cells .
 human leukemic K562 cells, NF-E2, GATA-1, transcription factors
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:
 human leukemic K562 cells, NF-E2, GATA-1, transcription factors