Figure 4.
A three-dimensional model of an embryo (shown as a wireframe) viewed from different angles (illustrated using frustums). The resulting view from each angle is shown next to its respective frustrum.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.