930
Furthermore, an antiserum against KBF1 (identical to 50 kDa NF-kappa B protein ) reacted with the p50 of NF-GM2 , indicating that the NF-GM2 polypeptide cannot be immunologically differentiated from the 50 kDa subunit of NF-kappa B .
 protein: KBF1; protein: NF-GM2 polypeptide; protein: 50 kDa NF-kappa B protein; protein: 50 kDa subunit; protein: p50; protein: NF-GM2; protein: NF-kappa B
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: KBF1; protein: NF-GM2 polypeptide; protein: 50 kDa NF-kappa B protein; protein: 50 kDa subunit; protein: p50; protein: NF-GM2; protein: NF-kappa B