18682
We applied quantitative mass - spectrometry - based proteomics to identify readers for mC and hmC in mouse embryonic stem cells ( mESC ) , neuronal progenitor cells ( NPC ) , and adult mouse brain tissue .
 Chemical: hmC
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: hmC 
Answer:
 Chemical: hmC