| Fig 40-005 | |
|---|---|
| A high magnification of the secretory ducts of Brunner's gland. | |
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1. Villi 2. Crypts of Lieberkuhn 3. Secretory units of Brunner's gland 4. Secretory duct of Brunner's gland opening into the bottom of a crypt of Lieberkuhn 5. Muscularis mucosae that are interrupted by secretory ducts 6. Surface of duodenum |