22771
METHODS : In Experiment 1 , licking microstructure when consuming sucrose solution ( 2 to 20 % ) was compared in MOR knockout and wildtype mice as a function of sucrose concentration and level of food deprivation .
 Chemical: sucrose; Chemical: sucrose
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: sucrose; Chemical: sucrose