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The Endowment for Human Development

The Endowment for Human Development

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The Fetus Yawns

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From The Biology of Prenatal Development.

Script: 到10周，对上眼睑的刺激导致眼睛往下翻。

胎儿打哈欠，经常打开和关闭嘴巴。

All ages referenced to fertilization, not last menstrual period.

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A Burst of Growth

A Burst of Growth

4D Ultrasound

4D Ultrasound

The Fetus Yawns

The Fetus Yawns

Thumb Sucking

Fingernails and Toenails

Fingernails and Toenails

Unique Fingerprints Appear

Unique Fingerprints Appear

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