7695
In this review , we explored most of literature favoring one or the other concept , in order to provide an accurate vision on the real participation of this tryptophan metabolite in both experimental paradigms and human brain pathologies .
 Chemical: tryptophan
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: tryptophan