4171
Administration of low , but not high , doses of oral nicotine in DSS - treated mice resulted in a significant decrease in disease severity , histologic damage scores , as well as colonic level of tumor necrosis factor - alpha .
 Chemical: nicotine
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: nicotine