3231
The different patterns of p50 , p52 and RelB protein nuclear localization may provide insight into their different roles during the immune response in vivo .
 p52, RelB, p50
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:
 p52, RelB, p50