3548
Histone deacetylase 3 ( Hdac3 ) is a nuclear enzyme that removes acetyl groups from lysine residues in histones and other proteins to epigenetically regulate gene expression .
 Chemical: acetyl; Chemical: lysine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: acetyl, lysine 
Answer:
 Chemical: acetyl; Chemical: lysine