19555
Protein misfolding and aggregation in the brain have been recognized to be crucial in the pathogenesis of various neurodegenerative diseases , including Alzheimer ' s , Parkinson ' s , and the polyglutamine ( polyQ ) diseases , which are collectively called the " protein misfolding diseases " .
 Chemical: polyglutamine; Chemical: polyQ
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: polyglutamine; Chemical: polyQ