9429
Epstein-Barr virus EBNA3C represses Cp , the major promoter for EBNA expression , but has no effect on the promoter of the cell gene CD21 .
 Cp, cell gene CD21, EBNA, EBNA3C
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:
 Cp, cell gene CD21, EBNA, EBNA3C