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怀孕多少周胎盘成熟到二级
更新时间: 2020-11-04 00:00:00  

怀孕到了39周胎盘成熟到二级,胎盘的成熟度代表胎盘的功能状态。

胎盘是胎儿与母体之间物质交换的重要器官,是人类妊娠期间由胚胎胚膜和母体子宫内膜联合长成的母子间组织结合器官。

关键词: 怀孕 多少 胎盘 成熟 二级

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