28975
To study this , PCSK9 - Y119X mutant ( knockout ) and wild type mice were treated +/- atorvastatin for 12 wks .
 Chemical: atorvastatin
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: atorvastatin 
Answer:
 Chemical: atorvastatin