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The Endowment for Human Development
The Endowment for Human Development
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Breathing Motions


8 weeks, 2 days

From The Biology of Prenatal Development.Buy Now

Script: اگرچه در شکم مادر ھیچ ھوایی وجود ندارد، جنین در مدّت 8 هفته حرکات تنفس ادواری را نشان می دهد.

All ages referenced to fertilization, not last menstrual period.
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