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怀孕8周胎芽正常多少
更新时间: 2020-11-04 00:00:00  

怀孕8周胎芽正常胎芽长约1.66cm,胎形已定,可分出胎头、体及四肢,胎头大于躯干。胎芽是胎儿发育过程中某一时期的称谓,一般称妊娠3周到1月4周为胎芽期。胎芽其实就是早期的胚胎。

关键词: 怀孕 正常 多少

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