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8 ore 14 lugl 2003 anni - Baby's lungs develop

Descrizione:

your baby's lungs are beginning to produce surfactant, the substance that allows the air sacs in the lungs to inflate — and keeps them from collapsing and sticking together when they deflate.

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ByMarcos Abreo
7 dic 2017
0
0
292

Data:

8 ore 14 lugl 2003 anni
Adesso
~ 20 years ago
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