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Ultrasound-assisted gene delivery is associated with the parameters of ultrasound exposure, such as mechanical index, pulse repetition frequency, time of exposure, and so on.
超声的此种特性，与超声的照射条件，如机械指数、脉冲重复频率、照射时间等有关。
Results demonstrate that ultrasound exposure at low sound intensities leads to slight increases in hemolysis, osmotic fragility and lipid peroxidation due to the effect of shear stress.
结果表明， 在声压较低时， 流体间的剪切张力使得红细胞的溶血率、渗透脆性、脂质过氧化水平随作用时间及作用强度增加缓慢增长；
Ultrasound may cause harm for human body, should avoid to exposure in long time.
超声可能对人体造成危害，应避免长时间照射。
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