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.
***P < 0.001 (Bonferroni test after two-way ANOVA). Inset: detail of the same data, which illustrates the response in the hypoxic range.
