Multiple choice

In which part of the intestine are M cells found in mammals?  

  1. Interacting with intraepithelial lymphocytes.

  2. In the lamina propria

  3. In the follicles of the Peyer's patches.

  4. In the pyloric antrum

  5. In the dome area of Peyer's patches
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Peyer's patches are covered by specialszed epithelium (follicle-associated epithelium). Some of these epithelial cells have surfaces, which seem folded under the scanning electron microscope. These microfold, or M, cells sample and actively transport particulate antigens from the lumen into the ‘dome’ area, where priming of both T and B lymphocytes occurs.

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