Figure 2.
The structures of (A) Oz (the closed-ring structure), (B) Oz (the open-ring structure), and (C) Oz:G.
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.