10118
The relatively short half - life of 2 . 8 h implies a rapid decrease in orally administered methapyrilene in vivo below concentrations that can cause gene expression alterations .
 Chemical: methapyrilene
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: methapyrilene