21710
In the small intestine , peptide transporter 1 ( PEPT1 ) plays a role in the transport of di - and tripeptides .
 Chemical: di - and tripeptides
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: di - and tripeptides