2692
In contrast , learning of new tasks was enhanced and correlated with the increase of nNOS activity and the decrease of glutathione peroxidase .
 Chemical: glutathione
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: glutathione 
Answer:
 Chemical: glutathione