11560
Lactobacillus johnsonii inhibits indoleamine 2 , 3 - dioxygenase and alters tryptophan metabolite levels in BioBreeding rats .
 Chemical: indoleamine; Chemical: tryptophan
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: indoleamine, tryptophan 
Answer:
 Chemical: indoleamine; Chemical: tryptophan