579
Similar constructs controlled by NF-kappa B or the entire interleukin-2 enhancer show bimodal expression patterns during induction, suggesting that thresholds set by the concentration of transcription factors may be a common property of inducible genes .
 DNA: inducible genes; protein: NF-kappa B; DNA: interleukin-2 enhancer; protein: transcription factors
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: inducible genes; protein: NF-kappa B; DNA: interleukin-2 enhancer; protein: transcription factors