680
PRS mice also showed an increased binding of DNMT1 and MeCP2 , and an increase in 5 - methylcytosine and 5 - hydroxymethylcytosine in specific CpG - rich regions of the reelin and GAD67 promoters .
 Chemical: 5 - methylcytosine; Chemical: 5 - hydroxymethylcytosine; Chemical: CpG
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: 5 - methylcytosine; Chemical: 5 - hydroxymethylcytosine; Chemical: CpG