IMG 63 (2)
2. M cells are critical for sampling of intestinal flora and for transferring pathogens across the epithelial barrier for recognition by the immune system.
3. M cells take up antigen by endocytosis or phagocytosis and transport lt in vesicles across their cytoplasm (transcytosis) to release it to the underlying lymphocytes and APC in the Peyers Patches.
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