17159
There was extensive intra - and intergenic hypomethylation with erasure of methylation marks at imprinted , X - linked , or germline - specific genes during gonadal sex determination and partial methylation at particular retrotransposons .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None