Objective To study the effects of vitamin K on bone metabolize in simulated weightlessness rats.

目的探讨维生素K对模拟失重大鼠骨质的影响，为失重骨丢失的防护提供实验依据。

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Method Weightlessness was simulated by tail suspension in female rats.

方法采用大鼠尾悬吊法建立模拟失重模型。

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Method Weightlessness was simulated by tail suspension of female rats.

方法采用大鼠尾部悬吊法建立模拟失重模型。

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The study took two sets of rats, both of who were subjected to an environment that simulated weightlessness.

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