4528
B-cell immortalization by Epstein-Barr virus ( EBV ) is dependent on permanent control of the cellular processes which normally regulate cell division and apoptosis , functions possessed by p53 in a number of normal cell types.
 B-cell, p53
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:
 B-cell, p53