30389
Measurement of retinal endocannabinoid levels in URB597 - treated animals at 2 weeks post - axotomy revealed a significant increase in AEA levels , accompanied by a decrease by a decrease in the AEA metabolite , N - arachidonoylglycine , in young animals but not aged animals .
 Chemical: retinal; Chemical: URB597; Chemical: AEA; Chemical: AEA; Chemical: N - arachidonoylglycine
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: retinal; Chemical: URB597; Chemical: AEA; Chemical: AEA; Chemical: N - arachidonoylglycine