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

Hatched Blastocyst

#56, Slide 21 of 24

6 days

Source: Centro Riproduzione Assistita, Catania, Italy.

Note:

Can you see the defect in the zona through which the embryo escaped?

Label Key:

1. shell of zona
2. free embryo at blastocyst stage
3. inner cell mass
All ages referenced to fertilization, not last menstrual period.
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