17000
MDA - MB - 231 / ADM contained fewer methylated CpG sites than its parental cell line , and miR - 663 expression in MDA - MB - 231 cells was reactivated by 5 - aza - 29 - deoxycytidine treatment , indicating that DNA methylation may play a functional role in the expression of miR - 663 .
 Chemical: CpG; Chemical: 5 - aza - 29 - deoxycytidine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: CpG; Chemical: 5 - aza - 29 - deoxycytidine