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初期孕囊一天长多少
更新时间: 2020-11-04 00:00:00  

按正常的发育速度,怀孕初期孕囊一天增长2mm左右,一周可以增大一厘米到一点五厘米左右。

孕囊是原始的胎盘组织,是被羊膜、血管网包裹的小胚胎。孕囊是怀孕最初的形态,那时候胎儿还没有形成。

关键词: 初期 天长 多少

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