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A novel T-cell trans-activator that recognizes a phorbol ester-inducible element of the interleukin-2 promoter .
 protein: interleukin-2; DNA: interleukin-2 promoter; protein: T-cell trans-activator; DNA: phorbol ester-inducible element
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: interleukin-2; DNA: interleukin-2 promoter; protein: T-cell trans-activator; DNA: phorbol ester-inducible element