15154
Dopamine D2 receptor activation leads to an up - regulation of glial cell line - derived neurotrophic factor via G beta gamma - Erk1 / 2 - dependent induction of Zif268 .
 Chemical: Dopamine
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: Dopamine