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We therefore tested the possibility that the GM-CSF gene is also regulated by a cognate motif for the NF-kappa B transcription factor .
 protein: NF-kappa B; DNA: GM-CSF gene; protein: NF-kappa B transcription factor; protein: GM-CSF
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; DNA: GM-CSF gene; protein: NF-kappa B transcription factor; protein: GM-CSF