8172
The application of matrix - assisted laser desorption / ionization imaging mass spectrometry ( MALDI IMS ) provided the spatial distribution of FDV and its metabolites in brain tissue ( rabbit , minipig , and monkey ) .
 FDV
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 FDV