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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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Blastocyst

4 days

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

Label Key:

1. cavity within blastocyst
2. zona pellucida
All ages referenced to fertilization, not last menstrual period.
The Human Morula
The Human Morula
Early Blastocyst
Early Blastocyst
Blastocyst
Blastocyst
Blastocyst with Inner Cell Mass
Blastocyst with Inner Cell Mass
Hatching Blastocyst
Hatching Blastocyst
Hatching Blastocyst
Hatching Blastocyst
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