Contrast the pathological change and biochemical indicator detection condition in rat lung tissue circa medicine intervention, decision the curative effect.
对比药物干预前后大鼠肺组织的病理变化情况及生化指标的检测情况，判断疗效。
Objective: to observe the effect of high intensity focused ultrasound (HIFU) on treating SD rat osteosarcoma through pathological ways and biochemical indicator of blood.
目的：从病理学角度和血清生化水平观察高强度聚焦超声(HIFU)治疗SD大鼠骨肉瘤的效果。
Conclusion: it's effective to decrease the birth of fetal chromosomal abnormality by undergoing prenatal screening and diagnose with mother serum biochemical indicator in the second trimester.
结论孕中期应用母血清生化指标进行产前筛查，结合产前诊断是减少染色体异常患儿出生的有效方法。
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