1876
This differential binding of specific NF-kappa B /Rel subunits is likely to mediate the disparate functions of these two NF-kappa B /Rel binding sites .
 protein: NF-kappa B; DNA: NF-kappa B /Rel binding sites; protein: NF-kappa B; protein: NF-kappa B /Rel subunits
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: NF-kappa B, NF-kappa B /Rel binding sites, NF-kappa B, NF-kappa B /Rel subunits 
Answer:
 protein: NF-kappa B; DNA: NF-kappa B /Rel binding sites; protein: NF-kappa B; protein: NF-kappa B /Rel subunits