11605
Using either vector at a dose of ~ 2 x 10 ( 12 ) vector genome ( vg ) per 3 - 6 kg animal , approximately 2 % of the entire brain and spinal cord was transduced , covering all regions of the central nervous system ( CNS ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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