19556
In the polyQ diseases , an abnormally expanded polyQ stretch in the responsible proteins causes the proteins to misfold and aggregate , eventually resulting in neurodegeneration .
 Chemical: polyQ; 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: polyQ; Chemical: polyQ