Distinct populations of dendritic cells are present in the subepithelial dome and T cell regions of the murine Peyer's patch.

While the amount of proliferation was relatively low compared to that observed in vitro, we feel this may be highly significant in view of the fact that the GI tract efficiently degrades fed antigen, and the fact that such low level stimulation would be im- portant in the face of continuous antigen feeding.

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