The scan may also help confirm both the accuracy of the pregnancy dates and the fetal viability.
扫描还可以帮助确认的准确性的怀孕日期和胎儿的生存能力。
Objective To investigate the influence of cryopreservation on cellular viability of late pregnancy fetal valved allografts in human.
目的探讨液氮冷冻保存对大月龄人胎儿带瓣血管细胞活性的影响。
Objective To investigate the influence of cryopreservation on cellular viability of late pregnancy fetal valved allografts in human.
目的探讨液氮冷冻保存对大月龄人胎儿带瓣血管细胞活性的影响。
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