12963
To test this , 7 - month - old Tg mice were treated with a low ( 1 mg ) or high ( 10 mg ) dose of GTC for 6 months .
 None
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:  
Answer:
 None