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: Early Events

Hatched Blastocyst

#54, Slide 20 of 24

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.
When does health begin? Find out now.
Help give babies a healthy start and a healthy future. Donate now.