8636
Finally , in vivo microdialysis experiments showed that paraxanthine , but not caffeine , significantly increases extracellular levels of dopamine in the dorsolateral striatum , which was blocked by l - NAME .
 Chemical: paraxanthine; Chemical: caffeine; Chemical: dopamine; Chemical: l - NAME
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: paraxanthine; Chemical: caffeine; Chemical: dopamine; Chemical: l - NAME