18736
The amount of reduced glutathione ( GSH ) and glutathione disulfide ( GSSG ) significantly increased with an increase in the level of As ( both 0 . 25 and 0 . 5 mM ) , while the GSH / GSSG ratio decreased at higher concentration ( 0 . 5 mM ) .
 Chemical: glutathione; Chemical: GSH; Chemical: glutathione disulfide; Chemical: GSSG; Chemical: As; 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: glutathione; Chemical: GSH; Chemical: glutathione disulfide; Chemical: GSSG; Chemical: As; Chemical: GSH; Chemical: GSSG