Figure 14­80
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Aggregations of lymphocytes may be organized into lymph nodules (arrow) in the appendix. Although they are sim-
Holdings,
ilar to the nodules of the ileum, those of the appendix are not called Peyer's patches. In this micrograph, several
lymph nodules are visible in the mucosa of the appendix. Some of them have germinal centers. Often lymphoid nod-
ules can extend beyond the muscularis mucosae into the submucosa.
LLC.
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847

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