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Hatching Blastocyst

5 days


Note:

The zona has served its purpose and is disintegrating just in time to free the embryo for the next step in the journey.

Label Key:

  • 1. site of escape
  • 2. portion of embryo outside the zona
  • 3. portion of embryo still inside the zona
  • 4. zona pellucida
Source: Centro Riproduzione Assistita, Catania, Italy. All ages referenced to fertilization, not last menstrual period.
Hatching Blastocyst
Hatching Blastocyst
Hatched Blastocyst
Hatched Blastocyst
Hatched Blastocyst
Hatched Blastocyst
Hatched Blastocyst
Hatched Blastocyst
Free Blastocyst  (without zona)
Free Blastocyst (without zona)
Embryo Cross Section 8-9 Days
Embryo Cross Section 8-9 Days
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