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The Endowment for Human Development
The Endowment for Human Development
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Head, Heart, and Liver

4 weeks, 4 days

From The Biology of Prenatal Development.Buy Now

Note:

Can you see the placental vessels in the background?

Label Key:

1. right anterior cardinal vein
2. heart
3. liver
4. amnion
5. right upper limb bud
All ages referenced to fertilization, not last menstrual period.
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Head, Heart, and Liver
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