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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 h 28 m, 7 abr 2020 año - Placentation

Descripción:

The placenta is fully developed around 14 - 16 weeks. When this organ becomes fully developed, it is responsible for providing nutrition, excretion, respiration, and endocrine function.

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Research and Report 5 Stages of Reproduction

ByKarina Steinhauser
11 dic 2019
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1 h 28 m, 7 abr 2020 año
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