21627
Cell viability was measured using MTT and LDH assays , lipid peroxidation was determined by HPLC , GSH and GSSG levels assessed by fluorometric techniques , enzymatic activity and protein expression were determined by spectrofometric techniques and Western blot , respectively .
 Chemical: MTT; Chemical: GSH; Chemical: GSSG
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: MTT; Chemical: GSH; Chemical: GSSG