这些细胞随着早期的航天飞行被送上太空，用以观察人类细胞在失重的状态下如何存活，并将它们暴露在辐射中用以测试核武器的影响。
They were sent up with early space flights to see how human cells coped with zero gravity and exposed to radiation to test the effects of nuclear weapons.
目的：观察模拟失重条件下由骨形态发生蛋白2诱导的ROS17/2.8细胞中MEK1激酶活性的变化。
OBJECTIVE: To investigate the effects of simulated weightlessness on the activity of MEK1 induced by BMP-2 in ROS17/2.8 cells.
研究模拟失重对健康大鼠肺功能、肺微血管通透性、肺组织细胞凋亡的影响。
ObjectiveTo investigate the effects of simulated weightlessness on lung function, alveolocapillary permeability and cell apoptosis in pulmonary tissues in healthy rats.
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