9456
The complex on the proximal site ( NF kappa B2 ) appears to be composed of p50 and relB .
 p50, proximal site, relB, NF kappa B2
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:
 p50, proximal site, relB, NF kappa B2