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.
Mean (±SD) plasma renin activity (PRA) in black and white girls at the end of the 3-wk study period on low- and high-sodium (Na+) diets. Blood samples were drawn at 0700 after subjects had been recumbent overnight and at 0900 after they had been upright for 2 h. Data points with different letters are significantly different (P < 0.05, ANOVA). Angio, angiotensin.
