2097
Striatal microglia expressing eGFP constitutively show morphological changes after METH that are characteristic of activation .
 Chemical: METH
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: METH 
Answer:
 Chemical: METH