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

Sperm

#38, Slide 8 of 312

Source: Centro Riproduzione Assistita, Catania, Italy.

Label Key:

1. spermatozoa
All ages referenced to fertilization, not last menstrual period.
Buy the Biology of Prenatal Development DVD
Tell your story. Create your own pregnancy calendar.