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Therefore , we propose that cells have a cytosolic system consisting of the nemRA - gloA operon for the reduction of electrophiles , especially quinones and glyoxals , to maintain an appropriate intracellular redox balance .
 quinones, glyoxals
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 quinones, glyoxals