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Four specific protein-DNA complexes were detected after incubation of nuclear extracts ( NE ) from T3-responsive pituitary (GH3) cells with a TREp -containing DNA fragment .
 cell line: T3-responsive pituitary (GH3) cells; DNA: TREp -containing DNA fragment; protein: protein-DNA complexes; DNA: TREp
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:
 cell line: T3-responsive pituitary (GH3) cells; DNA: TREp -containing DNA fragment; protein: protein-DNA complexes; DNA: TREp