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The Endowment for Human Development
The Endowment for Human Development
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Quickening


4 months

From The Biology of Prenatal Development.Buy Now

Script: 虽然6周胚胎开始运动， 孕妇在14到18周之间 首次感到胎儿运动。 传统上把这个事件 叫做胎动初觉。

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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4D Ultrasound
4D Ultrasound
4D Ultrasound
4D Ultrasound
Quickening
Quickening
Movement
Movement
4D Ultrasound
4D Ultrasound
Hormonal Stress Response
Hormonal Stress Response
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