Superstition is not to say that baby left a lanugo easy to keep.
并不是为了迷信说是宝宝留了胎毛好养。
20 weeks. Approximately 20cm. Woolly hair, known as lanugo, covers the entire head.
第二十周, 胎儿体长大约20厘米, 胎毛布满整个头部。
Fetal squames, lanugo hair, vernix, and mucin can embolize to small pulmonary arteries.
胎儿的鳞状上皮, 胎毛, 胎脂和粘液可栓塞到肺内小动脉。
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