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jan 20, 2018 - Durante los primeros días de su desarrollo, el embrión se nutre de las reservas del óvulo. Pero estas reservas se agotan pronto. Por eso, en el útero, se formaun órgano nuevo para alimentar al embrión: la placenta.
Added to timeline:
Embarazo
By
Erick García
8 Oct 2018
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Date:
jan 20, 2018
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~ 7 years and 9 months ago
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