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The Endowment for Human Development
The Endowment for Human Development
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Slideshow: Early Events

The Human Morula

#14, Slide 14 of 24

3 days

From The Biology of Prenatal Development.Buy Now

Note:

The morula stage is reached when about 12 to 16 cells are present. This morula may contain 30 cells or more.

Label Key:

1. perivitelline space
2. zona pellucida
All ages referenced to fertilization, not last menstrual period.
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