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The fluorescein derivate Fluoro - Jade B ( FJB ) , which primarily labels dead or dying neurons , was used to study the acute focal inflammation in the spinal cord white matter .
 neurons, spinal cord white matter
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 neurons, spinal cord white matter