27798
However , enzymes contributing to oxidative metabolism of anandamide , namely cyclooxygenase - 1 and Cyp2D6 , were increased in the brain of aged mice , possibly enhancing the oxidative breakdown of anandamide .
 Chemical: anandamide; Chemical: anandamide
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: anandamide; Chemical: anandamide