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.
Gastrointestinal transit in HO-2Δ/Δ and NOSΔ/Δ mice. (A) Ten to 15 radiopaque markers (arrow) were fed to mice and tracked by radiography at periodic intervals. Excretion of markers was also monitored by x-ray (Bottom). (B) Average time to excrete all markers. Results are expressed as number of hours from marker consumption to excretion. (∗∗, P < 0.01, n = 7–11. Student’s t test for unpaired observations.)
