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BACKGROUND they were able to take pathogenic bacteria and inert particles in the lumen before retracting back to the SED. CONCLUSIONS: We describe an antigen sampling mechanism that occurs in PPs and involves cooperation between M cells of the follicle-associated epithelium and DCs of the subepithelial dome. This process might be developed to target vaccines to the mucosa.
Lelouard et al. (Thu,) studied this question.