10448
The hippocampus levels of superoxide dismutase ( SOD ) , glutathione peroxidase ( GSH - Px ) , and malondialdehyde ( MDA ) were assayed .
 superoxide, glutathione, GSH, malondialdehyde, MDA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 superoxide, glutathione, GSH, malondialdehyde, MDA