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Electrophoretic mobility shift assays and Southwestern blotting experiments were used to detect the binding of cellular transactivation factor NF-KB to the double repeat-KB enhancer sequence located in the long terminal repeat .
 DNA: long terminal repeat; protein: NF-KB; DNA: double repeat-KB enhancer sequence; protein: cellular transactivation factor
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: long terminal repeat; protein: NF-KB; DNA: double repeat-KB enhancer sequence; protein: cellular transactivation factor