16354
However , the pre - treatment of Quercetin in a dose - response manner prevented these changes and restored the expansion of neurospheres preferably by neutralizing the oxidative conditions and thereby reducing peroxynitrite formation , protein nitration and PK - M2 depletion .
 Chemical: Quercetin; Chemical: peroxynitrite
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: Quercetin; Chemical: peroxynitrite