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The ability of DHPG to increase PKA - dependent phosphorylation of GluA1 depends on concomitant activation of the dopamine - and cAMP - regulated phosphoprotein of 32kDa ( DARPP - 32 ) .
 Chemical: DHPG; Chemical: dopamine; Chemical: cAMP
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: DHPG, dopamine, cAMP 
Answer:
 Chemical: DHPG; Chemical: dopamine; Chemical: cAMP