Six pregnant women participated in a small trial in which placenta-derived stem cells were applied to fetal spinal cords and the treatment was found to be safe.
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二是优化生物样本采集要求。更新了监测人群的确定原则，新增了生物安全、采样空白、样本分装、样本接收、样本入库等关键环节的质量控制要求，并对血样和尿样的采集方式进行了调整优化，同时删减了脂肪、粪便、呼出气及其他组织等样本采集的相关内容。，推荐阅读夫子获取更多信息
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