Babies shed a layer of downy , slender hairs ( lanugo ) before or just after Birth.
细毛,在出生前或出生后不久便脱落.
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During the fifth month, downy hairs ( lanugo ) cover the Body and the skin becomes less transparent.
第五个月时, 身体长出绒毛状的毛发,皮肤也变得较不透明.
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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