14373
Cell cycle analysis of E2F in primary human T cells reveals novel E2F complexes and biochemically distinct forms of free E2F .
 primary human T cells, E2F, T cells, E2F, novel E2F complexes, E2F
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:
 primary human T cells, E2F, T cells, E2F, novel E2F complexes, E2F