9246
Dandelion leaf extract protects against liver injury induced by methionine - and choline - deficient diet in mice .
 Chemical: methionine; Chemical: choline
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: methionine, choline 
Answer:
 Chemical: methionine; Chemical: choline