18797
Characterization of the 5 - hydroxymethylcytosine - specific DNA restriction endonucleases .
 Chemical: 5 - hydroxymethylcytosine
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 - hydroxymethylcytosine