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21 ore 8 min, 16 nov 2002 anni - Embryo develops

Descrizione:

Cellular division takes place and the embriotic stage begins. The brain, spinal chord, heart, gastriointestines develops during the first week or two. Arms and leg buds become visible and heart begins to beat.

Aggiunto al nastro di tempo:

seth

BySeth Kirkpatrick
8 dic 2017
0
0
418

Data:

21 ore 8 min, 16 nov 2002 anni
Adesso
~ 22 years ago

Immagini:

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