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Transient transfection experiments show that several elements in the promoter-proximal region of the IL-2R alpha gene contribute to IL-1 responsiveness, most importantly an NF-kappa B site conserved in the human and mouse gene .
 DNA: NF-kappa B site; protein: NF-kappa B; DNA: IL-2R alpha gene; protein: IL-2R alpha; protein: IL-1; DNA: promoter-proximal region
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: NF-kappa B site, NF-kappa B, IL-2R alpha gene, IL-2R alpha, IL-1, promoter-proximal region 
Answer:
 DNA: NF-kappa B site; protein: NF-kappa B; DNA: IL-2R alpha gene; protein: IL-2R alpha; protein: IL-1; DNA: promoter-proximal region