24706
Based on the partial efficacy of exercise and mechanical stimulation regimens to prevent microgravity - induced bone loss and the known alterations in vestibular functions associated with space flights , we hypothesized that inner ear vestibular signals may contribute to the regulation of bone remodeling .
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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:
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