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Rho - kinase ( ROCK ) inhibitor Y27632 reduced brain level of polyglutamine - expanded huntingtin in HD transgenic mouse .
 Chemical: Y27632; Chemical: polyglutamine
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: Y27632; Chemical: polyglutamine