An official website of the United States government
Here's how you know
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.
Skin; Hrrh-R/Hrrh-R mouse, 21 days old. HE-stained section indicates the ectatic infundibula filled with laminated cornified material (black arrow). Bar: 20 μm.