91
This implicates E2F as a multifunctional target for proteins and enzymes, possibly, responsive to DNA damage through the negative effect of UDG on E2F -mediated transcriptional activity .
 E2F, E2F, UDG
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, E2F, UDG