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.
Arterial blood pressure and heart rate ± s.e.m. during baseline, hypoxia and recovery periods. * Significant difference between control (•, n = 12) and theophylline (○, n = 7) groups (P < 0.05, two-way ANOVA); † significant difference from mean of pre-infusion period (P < 0.05, one-way ANOVA).
