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For these reasons, the 5'-flanking region of the GPIIb gene was used to identify the regions that interact with DNA-binding nuclear factors .
 DNA: GPIIb gene; protein: DNA-binding nuclear factors; DNA: 5'-flanking region
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: GPIIb gene; protein: DNA-binding nuclear factors; DNA: 5'-flanking region