Chapter 20

The anatomic sites that constitute the major structures of the lymphatic system include groups and chains of lymph nodes, the spleen, the thymus, Waldeyer’s ring (a circular band of lymphoid tissue that surrounds the oropharynx, consisting of the palatine, lingual, and pharyngeal tonsils), the vermiform appendix, and the Peyer’s patches of the ileum.2,3 Minor sites of lymphoid … ................
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