9682
CCAAT displacement protein binds to and negatively regulates human papillomavirus type 6 E6 , E7 , and E1 promoters .
 CCAAT displacement protein, E6, E7, E1
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 CCAAT displacement protein, E6, E7, E1