1868
The promoter of the human major histocompatibility complex class II-associated invariant-chain gene ( Ii ) contains two NF-kappa B /Rel binding sites located at -109 to -118 ( Ii kappa B-1 ) and -163 to -172 ( Ii kappa B-2 ) from the transcription start site.
 -163 to -172, NF-kappa B, histocompatibility complex class II-associated invariant-chain gene, -109 to -118, Ii kappa B-1, Ii, NF-kappa B /Rel binding sites, promoter, Ii kappa B-2
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:
 -163 to -172, NF-kappa B, histocompatibility complex class II-associated invariant-chain gene, -109 to -118, Ii kappa B-1, Ii, NF-kappa B /Rel binding sites, promoter, Ii kappa B-2