18198
Antifibrotic effects of BC703 on BDL - induced hepatic fibrosis in rats were estimated by assessing serum levels of alanine aminotransferase ( ALT ) , aspartate aminotransferase ( AST ) , total bilirubin ( TBIL ) , blood urea nitrogen ( BUN ) , transforming growth factor - beta 1 ( TGF - beta 1 ) and hepatic levels of malondialdehyde ( MDA ) , glutathione ( GSH ) , total superoxide dismutase ( SOD ) and nitric oxide ( NO ) .
 alanine, aspartate, bilirubin, urea, nitrogen, malondialdehyde, MDA, glutathione, GSH, superoxide, nitric oxide, NO
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 alanine, aspartate, bilirubin, urea, nitrogen, malondialdehyde, MDA, glutathione, GSH, superoxide, nitric oxide, NO