1851
Motor impairment , dopamine ( DA ) neuronal activity and proenkephalin ( PENK ) gene expression in the caudate - putamen ( CPu ) were measured in 6 - OHDA - lesioned and treated ( L - DOPA + benserazide ) CB1 KO and WT mice .
 Chemical: dopamine; Chemical: DA; Chemical: proenkephalin; Chemical: PENK; Chemical: 6 - OHDA; Chemical: L - DOPA + benserazide
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: dopamine; Chemical: DA; Chemical: proenkephalin; Chemical: PENK; Chemical: 6 - OHDA; Chemical: L - DOPA + benserazide