Intestinal sections (1
m) from the duodenum (1mcaudal to the pyloric sphincter),
jejunum (midpoint of the small intestine), and ileum
(1 m cranial to the ileocecal junction) were rinsed
with physiological saline (0.15 M NaCl), weighed, and
processed for compositional analysis of total and mucosal
tissue. Intestinal mucosa was harvested by taking
a 10-cm section from each of the 1-m intestinal (colon,
duodenum, jejunum, and ileum) sections, splitting it
along the longitudinal axis, and scraping it with a glass
slide.