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Footprinting analysis revealed that the identical sequence CCGAAACTGAAAAGG , designated E6 , was protected by nuclear extracts from B cells , T cells , or HeLa cells.
 DNA: E6; cell type: T cells; cell type: B cells
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: E6; cell type: T cells; cell type: B cells