8103
We therefore tested the hypothesis that marrow fat contributes to the development of osteopenia by comparing the skeletal response to ovariectomy ( ovx ) in growing wild type ( WT ) and bone marrow adipocyte - deficient kit ( W / W - v ) mice .
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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