17157
We performed genome - wide DNA methylation analysis in male and female mouse primordial germ cells at embryonic days 10 . 5 , 13 . 5 , and 16 . 5 by whole - genome shotgun bisulfite sequencing .
 Chemical: bisulfite
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: bisulfite