1498
They bind to the kappa B motifs with different relative affinities that may reflect their different contribution in the expression of various promoters .
 DNA: kappa B motifs; DNA: promoters
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:
 DNA: kappa B motifs; DNA: promoters