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Human immunodeficiency virus type-2 gene expression : two enhancers and their activation by T-cell activators .
 DNA: enhancers; cell type: T-cell
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: enhancers; cell type: T-cell