Advertisement

16-Cell Stage (3 days)

Medically reviewed by: Stephanie Curreli, MD, PhD
Last Updated: Feb 10, 2015

The 16-cell stage occurs about three days after fertilization. At this point, the morula is still a solid mass; it will typically move into the uterine cavity as it approaches the 16 cell stage, where it will remain unattached for about 3 days.

Smart Anatomy Banner