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We have previously reported that pyrroloquinoline quinone ( PQQ ) prevents the amyloid formation of alpha - synuclein , amyloid beta ( 1 - 42 ) ( A beta ( 1 - 42 ) ) , and mouse prion protein .
 Chemical: pyrroloquinoline quinone; Chemical: PQQ
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: pyrroloquinoline quinone; Chemical: PQQ