30363
Administration of haloperidol increased Ser240 / 244 phosphorylation in a subpopulation of GABA - ergic medium spiny neurons ( MSNs ) , which express dopamine D2 receptors ( D2Rs ) .
 Chemical: haloperidol; Chemical: Ser240; Chemical: GABA; 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: haloperidol; Chemical: Ser240; Chemical: GABA; Chemical: dopamine