12674
Resting state fMRI ( rs - fMRI ) and diffusion MRI were used to study the changes in functional connectivity ( FC ) and ultra - structural tissue integrity before and after subchronic memantine treatment .
 Chemical: memantine
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: memantine