Skip Navigation
The Endowment for Human Development
The Endowment for Human Development
Improving lifelong health one pregnancy at a time.
Donate Now Get Free Videos

Slideshow: Entire Image Gallery by EHD

Hatched Blastocyst

#54, Slide 35 of 312

6 days

Source: Centro Riproduzione Assistita, Catania, Italy.

Note:

It's hard to believe but this big embryo once fit in that small shell.

Label Key:

1. embryo at the blastocyst stage
2. empty zona pellucida
All ages referenced to fertilization, not last menstrual period.
Tell your story. Create your own pregnancy calendar.
Buy the Biology of Prenatal Development DVD