Normal Duodenum x10
Normal Duodenum x10

Note how delicate and regular the villous mucosal pattern is in a well oriented section
The villous/crypt ratio is about 3/1
A submucosal Brunner's Gland penetrates the muscularis mucosa at the arrow
There is a total absence of inflammation in both the mucosa and submucosa
(Description By:Martin Nadel, M.D. )
(Image Contrib. by:Martin Nadel, M.D. UCHC )