6706
Only one of these bands was supershifted by antibody to p50 , whereas antibodies to p65 or other NF - kappaB proteins had no effect .
 p50, p65, NF - kappaB proteins
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 p50, p65, NF - kappaB proteins