11497
Within this region, a 19-bp nuclear factor binding site ( -570 to -552 ) was characterized by DNase I footprinting and electromobility shift assay .
 DNase I, -570 to -552, 19-bp nuclear factor binding site
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 DNase I, -570 to -552, 19-bp nuclear factor binding site