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.
Average values for relative wall thickness (A) and fractional shortening (B) are depicted for 18- and 28-mo-old mice (n = 15 mice per age group) before and after 4 exposure days each for 3 h/day to either FA or CB. *P < 0.05, vs. preexposure; ††P < 0.01, 28 mo vs. 18 mo.
