14497
Overexpression of the p50 , p65 and Rel proteins in these cells showed that significant activation of the IL-2R alpha kappa B site was observed only with Rel and Rel plus p65 .
 Rel, Rel proteins, Rel, p65, IL-2R alpha, p50, p65, kappa B site
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:
 Rel, Rel proteins, Rel, p65, IL-2R alpha, p50, p65, kappa B site