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The Endowment for Human Development
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Sucking and Swallowing


9 weeks, 3 days

From The Biology of Prenatal Development.Buy Now

Script: بنهاية 9 أسبوع، تبدأ عملية مص إصبع الإبهام ويستطيع الجنين الآن أن يبتلع سائل الشلى.

All ages referenced to fertilization, not last menstrual period.
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