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The increase in IL-2 gene expression triggered by CD28 involves a kappa B-like sequence in the 5'-regulatory region of the IL-2 promoter , called CD28 -responsive element .
 DNA: IL-2 promoter; DNA: kappa B-like sequence; protein: CD28; DNA: CD28 -responsive element; protein: IL-2; protein: IL-2; protein: CD28; DNA: 5'-regulatory 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: IL-2 promoter, kappa B-like sequence, CD28, CD28 -responsive element, IL-2, IL-2, CD28, 5'-regulatory region 
Answer:
 DNA: IL-2 promoter; DNA: kappa B-like sequence; protein: CD28; DNA: CD28 -responsive element; protein: IL-2; protein: IL-2; protein: CD28; DNA: 5'-regulatory region