4549
- Tacrolimus ( FK 506 ) is a powerful , widely used immunosuppressant .
 Chemical: Tacrolimus; Chemical: FK 506
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: Tacrolimus, FK 506 
Answer:
 Chemical: Tacrolimus; Chemical: FK 506