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Activation of T lymphocytes induces an NF-kappa B -like binding activity to the B2 site, concomitant with activation of the proenkephalin promoter .
 DNA: proenkephalin promoter; DNA: B2; protein: NF-kappa B; cell type: T lymphocytes
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: proenkephalin promoter; DNA: B2; protein: NF-kappa B; cell type: T lymphocytes