18737
The ascorbate peroxidase and glutathione S - transferase activities consistently increased with an increase in the As concentration , while glutathione reductase ( GR ) activities increased only at 0 . 25 mM .
 Chemical: ascorbate; Chemical: glutathione; Chemical: S; Chemical: As; Chemical: glutathione
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: ascorbate; Chemical: glutathione; Chemical: S; Chemical: As; Chemical: glutathione