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In addition, IL-2 is capable of increasing transcript levels of the p50 gene coding for the p50 subunit of the NF-kappa B transcription factor, whereas mRNA levels of the p65 NF-kappa B gene remained unchanged.
 protein: p65; protein: p50 subunit; protein: p50; protein: NF-kappa B; DNA: NF-kappa B gene; protein: IL-2; protein: NF-kappa B
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; protein: p50 subunit; protein: p50; protein: NF-kappa B; DNA: NF-kappa B gene; protein: IL-2; protein: NF-kappa B