19574
The pharmacodynamic study was carried out using elevated plus maze ( EPM ) and Morris water maze ( MWM ) behavioral models for nootropic activity in swiss albino mice ; and biochemical estimations ( acetylcholine esterase , reduced glutathione , malondialdehyde and brain nitrite level ) .
 Chemical: acetylcholine; Chemical: reduced glutathione; Chemical: malondialdehyde; Chemical: nitrite
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: acetylcholine; Chemical: reduced glutathione; Chemical: malondialdehyde; Chemical: nitrite