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Using either a p50- or p65- selected kappa B motif , which displayed differential binding with respect to the other protein, little to no binding was observed with the heterodimeric NF-kappa B complex .
 protein: NF-kappa B complex; protein: heterodimeric NF-kappa B complex
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: NF-kappa B complex; protein: heterodimeric NF-kappa B complex