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The Endowment for Human Development
The Endowment for Human Development
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Blastocyst with Inner Cell Mass

5 days

Blastocyst with Inner Cell Mass [Click for next image]
From The Biology of Prenatal Development.Buy Now

Note:

The inner cell mass is made up of embryonic stem cells.

Label Key:

1. zona pellucida
2. blastocyst cavity
3. inner cell mass
All ages referenced to fertilization, not last menstrual period.
Early Blastocyst
Early Blastocyst
Blastocyst
Blastocyst
Blastocyst with Inner Cell Mass
Blastocyst with Inner Cell Mass
Hatching Blastocyst
Hatching Blastocyst
Hatching Blastocyst
Hatching Blastocyst
Hatched Blastocyst
Hatched Blastocyst
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