) or https:// means you've safely connected to the .mil website. Share sensitive information only on official, secure websites.
Developmental Anatomy
Stage 15: Internal
Nervous system: neural tube, optic cup
An official website of the United States government
Official websites use .mil
A .mil website belongs to an official U.S. Department of Defense organization.
A .mil website belongs to an official U.S. Department of Defense organization.
Secure .mil websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .mil website. Share sensitive information only on official, secure websites.
A lock ( ) or https:// means you've safely connected to the .mil website. Share sensitive information only on official, secure websites.
