16363
Longitudinal in vivo micro CT scans demonstrated that individual mice lost between 15 % and 71 % in trabecular BV / TV in the distal femur during unloading ( average : - 43 % ) .
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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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