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The Endowment for Human Development
The Endowment for Human Development
Improving lifelong health one pregnancy at a time.
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Zygote

#6, Slide 13 of 312

6 hours

From The Biology of Prenatal Development.Buy Now

Label Key:

1. zona pellucida
2. cell membrane
3. perivitelline space
4. artifact
5. cytoplasm
All ages referenced to fertilization, not last menstrual period.
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