4781
Furthermore , KT at three doses significantly decreased 5 - HT content from distal colon of visceral hyperalgesia rats induced by NMS , while the significant decrease of 5 - HT content in serum was only observed in the group with KT at high dose .
 Chemical: 5 - HT; Chemical: 5 - HT
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: 5 - HT; Chemical: 5 - HT