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The phosphorylated forms of E2F-4 that bind to the E2F DNA site are different from hyperphosphorylated E2F-4 , which predominates in primary hemopoietic cells in G0 .
 E2F-4, E2F-4, E2F DNA site, primary hemopoietic cells
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:
 E2F-4, E2F-4, E2F DNA site, primary hemopoietic cells