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.
The up-ground parts are observed by stereoscope with 7.3× magnification (objective magnification × eyepiece magnification = 0.73×10). WT: wild-type.
