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Hatched Blastocyst

5 days

Source: Centro Riproduzione Assistita, Catania, Italy.

Note:

With the escape from the zona complete, the embryo is free to implant.

Label Key:

  • 1. embryo at the blastocyst stage
  • 2. shell of discarded zona pellucida

All ages referenced to fertilization, not last menstrual period.
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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
Embryo at About 11 Days
Embryo at About 11 Days
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