1253
In this work , we determined the sequences of eight VirF - binding sites from four different genes , by DNase I or hydroxyl radical footprinting .
 GENE: VirF - binding sites; GENE: DNase I
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: VirF - binding sites; GENE: DNase I