1h 9min, feb 23, 2002 y - Lanugo

Description:

By week twenty-one will be covered in languo. Languo is a very fine soft hair. The purpose of languo may be to keep the baby at the right temperature. The lanugo will usually disappear before birth.

Source
“Pregnancy and Baby Guide.” NHS Choices, NHS, www.nhs.uk/Conditions/pregnancy-and-baby/pages/pregnancy-weeks-17-18-19-20.aspx.

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