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 levels of (a) nitric oxide (NO), (b) nitric oxide synthase (NOS), and (c) endothelin-1 (ET-1) in six groups of rats (mean ± SD, n = 6). Compared with the sham group, the difference was statistically significant (** p < 0.01). Compared with the model group, the difference was statistically significant (# p < 0.05, ## p < 0.01). The color asterisks indicate significant differences between the two groups, * p < 0.05 and ** p < 0.01.
