FIG 2.
A C57BL/6N-TyrcWTSI mouse (left) compared to a black C57BL/6N mouse (right). Image taken at 4 weeks of age.
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.