13131
Cancellous bone volume density was 58 % lower ( P < 0 . 001 , compared to cage controls ) in the unloaded limb but not significantly affected in the loaded limb .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None