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Analysis of the p50 and p65 subunits of the NF-kappa B transcription factor complex has revealed that both proteins can interact with related DNA sequences through either homo- or hetero dimer formation .
 protein: p65 subunits; DNA: DNA sequences; protein: NF-kappa B; protein: p50; protein: NF-kappa B transcription factor 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: p65 subunits; DNA: DNA sequences; protein: NF-kappa B; protein: p50; protein: NF-kappa B transcription factor complex