FIGURE 2.
HIF-1 regulates O2 supply and demand
Pathways that are active under hypoxic and nonhypoxic conditions are indicated by blue and red arrows, respectively.
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.